0001564590-19-032909 | 10-K | XBRL Viewer

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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Jun. 30, 2019	Aug. 15, 2019	Dec. 31, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	ACCURAY INC
Entity Central Index Key	0001138723
Document Type	10-K
Document Period End Date	Jun. 30, 2019
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Trading Symbol	ARAY
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 226,552,976
Entity Common Stock, Shares Outstanding		88,777,310
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-33301
Entity Tax Identification Number	208370041
Entity Address, Address Line One	1310 Chesapeake Terrace
Entity Address, City or Town	Sunnyvale
Entity Address, State or Province	California
Entity Address, Postal Zip Code	94089
City Area Code	408
Local Phone Number	7164600

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Current assets:
Cash and cash equivalents	$ 76,798	$ 83,083
Restricted cash	10,218	9,830
Accounts receivable, net of allowance for doubtful accounts of $605 and $251 as of June 30, 2019 and June 30, 2018, respectively	111,885	65,994
Inventories	120,823	108,540
Prepaid expenses and other current assets	24,205	15,569
Deferred cost of revenue	146	1,141
Total current assets	344,075	284,157
Property and equipment, net	17,122	23,698
Goodwill	57,770	57,855
Intangible assets, net	679	821
Restricted cash	1,162	620
Other assets	17,373	11,576
Total assets	438,181	378,727
Current liabilities:
Accounts payable	29,562	19,694
Accrued compensation	31,150	28,992
Other accrued liabilities	32,742	22,448
Customer advances	20,395	22,896
Deferred revenue	78,332	75,404
Total current liabilities	192,181	169,434
Long-term liabilities:
Long-term other liabilities	9,646	8,608
Deferred revenue	26,639	20,976
Long-term debt	159,844	131,077
Total liabilities	388,310	330,095
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value; authorized: 5,000,000 shares; no shares issued and outstanding
Common stock, $0.001 par value; authorized: 200,000,000 shares as of June 30, 2019 and June 30, 2018, respectively; issued and outstanding: 88,521,511 and 86,129,256 shares at June 30, 2019 and June 30, 2018, respectively	89	86
Additional paid-in-capital	535,332	521,738
Accumulated other comprehensive income (loss)	(10)	1,093
Accumulated deficit	(485,540)	(474,285)
Total stockholders' equity	49,871	48,632
Total liabilities and stockholders’ equity	$ 438,181	$ 378,727

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 605	$ 251
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized shares	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized shares	200,000,000	200,000,000
Common stock, issued shares	88,521,511	86,129,256
Common stock, outstanding shares	88,521,511	86,129,256

Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Net revenue:
Total net revenue	$ 418,785	$ 404,897	$ 383,414
Cost of revenue:
Total cost of revenue	256,134	243,202	242,073
Gross profit	162,651	161,695	141,341
Operating expenses:
Research and development	56,493	57,251	49,921
Selling and marketing	55,998	60,105	57,477
General and administrative	49,577	48,136	43,766
Total operating expenses	162,068	165,492	151,164
Income (loss) from operations	583	(3,797)	(9,823)
Other expense, net	(14,927)	(19,224)	(18,718)
Loss before provision for income taxes	(14,344)	(23,021)	(28,541)
Provision for income taxes	2,086	878	1,038
Net loss	$ (16,430)	$ (23,899)	$ (29,579)
Net loss per share—basic and diluted	$ (0.19)	$ (0.28)	$ (0.36)
Weighted average common shares used in computing net loss per share:
Basic and diluted	87,465	84,893	82,495
Net loss	$ (16,430)	$ (23,899)	$ (29,579)
Foreign currency translation adjustment	(247)	83	33
Reclassification adjustments on available for sale investments, net of tax		89	(74)
Change in defined benefit pension obligation	(856)	973	949
Comprehensive loss	(17,533)	(22,754)	(28,671)
Products
Net revenue:
Total net revenue	196,665	183,898	179,611
Cost of revenue:
Total cost of revenue	116,711	103,038	113,357
Services
Net revenue:
Total net revenue	222,120	220,999	203,803
Cost of revenue:
Total cost of revenue	$ 139,423	$ 140,164	$ 128,716

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at Jun. 30, 2016	$ 59,660	$ 81	$ 481,346	$ (960)	$ (420,807)
Balance (in shares) at Jun. 30, 2016		81,378,208
Exercise of Stock options, net	463		463
Exercise of Stock options, net (in shares)		112,482
Issuance of restricted stock		$ 2	(2)
Issuance of restricted stock (in shares)		1,709,957
Issuance of common stock under employee stock purchase plan	3,346	$ 1	3,345
Issuance of common stock under employee stock purchase plan (in shares)		870,037
Share-based compensation	13,154		13,154
Tax withholding upon vesting of restricted stock units	(1,419)		(1,419)
Tax withholding upon vesting of restricted stock units (in shares)		(330,880)
Net loss	(29,579)				(29,579)
Cumulative translation adjustment	33			33
Unrealized (loss) on investments, net of tax	(74)			(74)
Reclassification adjustments on available for sale investments, net of tax	(74)
Change in defined benefit pension obligation	949			949
Balance at Jun. 30, 2017	46,533	$ 84	496,887	(52)	(450,386)
Balance (in shares) at Jun. 30, 2017		83,739,804
Exercise of Stock options, net	437		437
Exercise of Stock options, net (in shares)		108,800
Issuance of restricted stock		$ 1	(1)
Issuance of restricted stock (in shares)		1,166,776
Issuance of common stock under employee stock purchase plan	3,334	$ 1	3,333
Issuance of common stock under employee stock purchase plan (in shares)		921,583
Share-based compensation	12,289		12,289
Tax withholding upon vesting of restricted stock units	(293)		(293)
Tax withholding upon vesting of restricted stock units (in shares)		(61,536)
Retirement of Convertible Senior Notes	288		288
Retirement of Convertible Senior Notes (in shares)		253,829
Allocated transaction cost in debt issuance	8,798		8,798
Net loss	(23,899)				(23,899)
Cumulative translation adjustment	83			83
Reclassification adjustments on available for sale investments, net of tax	89			89
Change in defined benefit pension obligation	973			973
Balance at Jun. 30, 2018	$ 48,632	$ 86	521,738	1,093	(474,285)
Balance (in shares) at Jun. 30, 2018	86,129,256	86,129,256
Exercise of Stock options, net	$ 489		489
Exercise of Stock options, net (in shares)		114,932
Issuance of restricted stock		$ 2	(2)
Issuance of restricted stock (in shares)		1,491,379
Issuance of common stock under employee stock purchase plan	3,022	$ 1	3,021
Issuance of common stock under employee stock purchase plan (in shares)		911,741
Share-based compensation	10,086		10,086
Tax withholding upon vesting of restricted stock units (in shares)		(125,797)
Adoption of new revenue recognition standard	5,175				5,175
Net loss	(16,430)				(16,430)
Cumulative translation adjustment	(247)			(247)
Change in defined benefit pension obligation	(856)			(856)
Balance at Jun. 30, 2019	$ 49,871	$ 89	$ 535,332	$ (10)	$ (485,540)
Balance (in shares) at Jun. 30, 2019	88,521,511	88,521,511

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net loss	$ (16,430)	$ (23,899)	$ (29,579)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	10,491	9,732	18,043
Share-based compensation	10,601	12,289	13,629
Amortization of debt issuance costs	1,528	1,629	3,785
Amortization and accretion of discount and premium on investments		(15)	67
Loss on sales of investments		171
Accretion of interest on debt	3,371	3,376	4,052
Provision for (recovery of) bad debt, net	3,681	(73)	119
Provision for write-down of inventories	2,340	1,603	2,253
(Gain) loss on disposal of property and equipment	2,588	(8)	8
Loss on extinguishment of debt		3,452
Gain on termination of lease obligation	(1,007)
Provision (benefit) for deferred income taxes	(86)	30	(268)
Changes in assets and liabilities:
Accounts receivable, short and long-term	(46,165)	7,223	(15,732)
Inventories	(14,165)	(8,685)	7,675
Prepaid expenses and other assets	(13,049)	4,209	(4,437)
Deferred cost of revenue, short and long-term	531	2,422	3,321
Accounts payable	9,456	2,002	2,189
Accrued liabilities	10,857	1,577	8,316
Customer advances	(2,549)	6,189	(5,158)
Deferred revenues, short and long-term	8,366	(4,893)	(8,663)
Net cash provided by (used in) operating activities	(29,641)	18,331	(380)
Cash flows from investing activities
Purchases of property and equipment, net	(4,311)	(6,276)	(5,031)
Purchase of intangible assets		(333)	(333)
Purchases of investments		(5,940)	(14,992)
Sales and maturities of investments		30,315	38,179
Net cash provided by (used in) investing activities	(4,311)	17,766	17,823
Cash flows from financing activities
Proceeds from employee stock plans	3,927	4,389	3,786
Taxes paid related to net share settlement of equity awards		(293)	(1,419)
Payments made to note and loan holders		(69,797)	(105,158)
Proceeds from debt, net of costs	19,968	66,111	48,253
Borrowings (repayments) under Revolving Credit Facility, net	4,578	(27,863)
Net cash provided by (used in) financing activities	28,473	(27,453)	(54,538)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	124	(346)	197
Net increase (decrease) in cash, cash equivalents and restricted cash	(5,355)	8,298	(36,898)
Cash, cash equivalents and restricted cash at beginning of period	93,533	85,235	122,133
Cash, cash equivalents and restricted cash at end of period	88,178	93,533	85,235
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	2,191	1,460	4,458
Cash paid for interest	9,761	9,187	9,927
Non-cash financing activities:
Exchange of Convertible Notes		6,641
Modification of Revolving Credit Facility		1,997
Non-cash investing activities:
Unpaid purchase of property and equipment at end of year	235	399	210
Unpaid purchase of intangible assets at end of year			667
Transfers from inventory to property and equipment	$ 1,170	$ 174	$ 1,395

The Company and its Significant Accounting Policies

12 Months Ended

Jun. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

The Company and its Significant Accounting Policies

Note 1. The Company and its Significant Accounting Policies

The Company

Accuray Incorporated (together with its subsidiaries, the “Company” or “Accuray”) designs, develops and sells advanced radiosurgery and radiation therapy systems for the treatment of tumors throughout the body. The Company is incorporated in Delaware and has its principal place of business in Sunnyvale, California. The Company has primary offices in the United States, Switzerland, China, Hong Kong and Japan and conducts its business worldwide.

Basis of Presentation and Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company transactions and balances have been eliminated in consolidation.

The accompanying consolidated financial statements have been prepared in accordance with United States accounting generally accepted accounting principles (“GAAP”), pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”).

The fair value measurement footnote disclosure for the year ended June 30, 2018 was revised to correct an error in the presentation of the fair value for the 3.75% convertible notes. As a result, the fair value was increased by $15.9 million. The supplemental financial information footnote for the year ended June 30, 2018, was revised to correct an error in the presentation of unbilled fees and services. As a result, unbilled fees and services was increased by $0.6 million. These revisions have no impact on the consolidated balance sheet as of June 30, 2018 and the consolidated statement of operations and comprehensive loss, stockholders’ equity and cash flows for the year then ended.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses, and related disclosures at the date of the financial statements. Key estimates and assumptions made by the Company relate to revenue recognition, assessment of recoverability of goodwill and intangible assets, valuation of inventories, share‑based compensation expense, convertible notes, income taxes, allowance for doubtful accounts and loss contingencies. Actual results could differ materially from those estimates.

Foreign Currency

The Company’s international subsidiaries use their local currencies as their functional currencies. For those subsidiaries, assets and liabilities are translated at exchange rates in effect at the balance sheet date and income and expense accounts at the average exchange rate. Resulting translation adjustments are excluded from the determination of net loss and are recorded in accumulated other comprehensive loss as a separate component of stockholders’ equity. Net foreign currency exchange transaction gains or losses are included as a component of other expense, net, in the Company’s consolidated statements of operations and comprehensive loss.

Fair Value Measurements

The carrying values of the Company’s financial instruments including cash equivalents, restricted cash, accounts receivable and accounts payable are approximately equal to their respective fair values due to the relatively short‑term nature of these instruments. Also refer to Note 8, Fair Value Measurements, for further details.

Cash and Cash Equivalents

The Company considers currency on hand, demand deposits, time deposits, and all highly liquid investments with an original maturity of three months or less at the date of purchase to be cash and cash equivalents. Cash and cash equivalents are held in various financial institutions in the United States and internationally.

Investments

The Company classifies all its investments as available‑for‑sale at the time of purchase since it is management’s intent that these investments be available for current operations, and as such, includes these investments as short‑term investments on its balance sheets. These investments primarily consist of commercial paper, U.S. treasury securities, and U.S. government agency and corporate debt securities. Short‑term investments classified as available‑for‑sale are recorded at fair market value with the related unrealized gains and losses included in accumulated other comprehensive income (loss), as a separate component of stockholders’ equity. Realized gains and losses on the sale of securities are determined by specific identification of each security’s cost basis. The Company regularly reviews its investment portfolio to determine if any security is other‑than‑temporarily impaired, which would require it to record an impairment charge in the period any such determination is made. In making this judgment, management evaluates, among other things, the duration and extent to which the fair value of a security is less than its cost, the financial condition of the issuer and any changes thereto, and management’s intent to sell, or whether it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis. Other expense, net, includes interest, dividends, amortization of purchase premiums and discounts, realized gains and losses on sales of securities and other‑than‑temporary declines in the fair value of securities, if any.

Concentration of Credit Risk and Other Risks and Uncertainties

The Company’s cash and cash equivalents are mainly deposited with several major financial institutions. At times, deposits in these institutions exceed the amount of insurance provided on such deposits. The Company has not experienced any losses in such accounts and believes that it is not exposed to any significant risk on these balances. The Company places its investments with high‑credit quality issuers. The Company does not invest an amount exceeding 5% of its combined cash, cash equivalents and investments in the securities of any one obligor or maker, except for obligations of the United States government, obligations of United States government agencies and money market accounts.

The Company had no customer that represented 10% or more of total net revenue for the years ended June 30, 2019, 2018 and 2017. The Company had one customer at June 30, 2019 and no customer at June 30, 2018 that accounted for more than 10% of accounts receivable, net.

The Company performs ongoing credit evaluations of its customers and maintains reserves for potential credit losses. Accounts receivable are deemed past due in accordance with the contractual terms of the agreement. Accounts are charged against the allowance for doubtful accounts once collection efforts are unsuccessful. Historically, such losses have been within management’s expectations.

Single‑source suppliers presently provide the Company with several components. In most cases, if a supplier was unable to deliver these components, the Company believes that it would be able to find other sources for these components subject to any regulatory qualifications, if required.

Restricted Cash

Restricted cash primarily consists of cash that is temporarily held in bank accounts which are under the control of the lender to the Revolving Credit Facility, certificates of deposit held as guarantees in connection with customer contracts and corporate leases as well as funds held as guarantees for Value‑Added Tax (VAT) obligations in a foreign jurisdiction.

Inventories

Inventories are stated at the lower of cost (on a first‑in, first‑out basis) or net realizable value. Excess and obsolete inventories are written down based on historical sales and forecasted demand, as judged by management.

Revenue Recognition

The Company adopted ASC Topic 606, Revenue from Contracts with Customers, on January 1, 2018. The Company’s revenue consists of product revenue resulting from the sale of systems, system upgrades and service revenue. The Company accounts for a contract with a customer when there is a legally enforceable contract between the Company and its customer, the rights of the parties are identified, the contract has commercial substance, and collectability of the contract consideration is probable. The Company’s revenues are measured based on the consideration specified in the contract with each customer, net of any discounts and taxes collected from customers that are remitted to government authorities.

The Company’s revenue is primarily derived from sales of CyberKnife and TomoTherapy Systems and services, which include post-contract customer support (“PCS”), installation services, training and other professional services.

The majority of the Company's revenue arrangements consists of multiple performance obligations, which can include system, upgrades, installation, training, services, construction, and consumables. For bundled arrangements, the Company accounts for individual products and services separately if a product or service is separately identifiable from other items in the bundled package and if a customer can benefit from it on its own or with other resources that are readily available to the customer.

The Company’s products are generally sold without a right of return, and the Company’s contracts generally provide a fixed transaction price. The Company may offer incentives in the form of discounts, including volume system discounts, which are included in the contract and used to calculate the final fixed price of the arrangement. These discounts may pertain to all performance obligations in a specific contract or may be allocated to a specific performance obligation. The Company also from time to time offers extended payment terms beyond one year and commissions or other forms of payment to customers. The Company estimates a financing component in transactions with payment terms extending beyond one year. This financing component is recognized as financing income at the time payment is received. The Company applies the practical expedient to not adjust for a significant financing component if the gap between payment and delivery was expected, at the contract inception, to be less than one year.

The Company offers customers the opportunity to trade in their older systems for credit towards the purchase of a new system. The Company generally does not provide specifc trade-in prices or upgrade rights at the time of purchase of the original system. Trade-in or upgrade transactions are based on the then fair value of the system and are separately negotiated taking into consideration circumstances existing at the time of the trade-in or upgrade. Accordingly, trade-ins and upgrades are not considered separate performance obligations in system sales agreements. Traded-in systems generally can be reconditioned and may be resold. The Company accounts for the fair value of the traded-in system in the total consideration in the arrangement by including the net realizable value of the traded-in system less a normal profit margin.

The stand-alone selling price (“SSP”) of performance obligations is determined based on observable prices at which the Company separately sells the products and services. If the SSP is not directly observable, then the Company will estimate the SSP considering market conditions, entity-specific factors, and information about the customer or class of customer that is reasonably available. The SSP is generally assessed as a percentage of the list price. The contract consideration allocation is based on the SSP at contract inception. The consideration (net of any discounts) is allocated among separate products and services in a bundle based on their individual SSP. For contract modifications that add additional goods or services or changes pricing, the most recent SSP is used for allocation to the remaining performance obligations.

The Company recognizes revenue for certain performance obligations at the point in time when control is transferred, such as delivery of products and upgrades. Service revenue is recognized over the term of the service period as the customer benefits from the services throughout the service period. Revenue related to services performed on a time-and-materials basis is recognized when performed. Services recognized over a period of time comprise a single stand-ready performance obligation satisfied over time as our customers simultaneously receive and consume benefits from the Company's performance. This performance obligation constitutes a series of services that are substantially the same and provided over time using the same measure of progress. Revenues derived from these arrangements are recognized over time using an output method based upon the passage of time as this provides a faithful depiction of the pattern of transfer of control.

The Company recognizes an asset for the incremental costs of obtaining a contract with a customer when the Company expects to generate future economic benefits from the related revenue-generating contracts. The Company capitalizes incremental contract acquisition costs, and amortizes such costs over a five year period, the period which the Company expects to benefit, based on historical service renewal rates, and expectations of future customer renewals. Most of the Company’s contract costs are associated with its internal sales force compensation program and a portion of its employee bonus program. The Company capitalizes and presents these contract assets in Prepaid expenses and other current assets and Other assets on its consolidated balance sheets. These contract assets are amortized over a period of five years commencing upon the initial transfer of control of the system to the customer. The amortization of these contract assets is included in cost of sales, research and development, sales and marketing, and general and administrative expenses based on department headcount allocations in the consolidated statements of operations. The pattern of amortization is commensurate with the pattern of transfer of control of the performance obligations to the customer. The Company elected to use the practical expedient in ASC 340-40-25-4 and expense as incurred commissions related to service renewals and upgrades because the contract term is less than a year.

The Company invoices its customers based on the billing schedules in its sales arrangements. Payment terms vary from 30 to 90 days, or longer, from the date of invoice. Contract assets for the periods presented primarily represent the difference between the revenue that was recognized based on the relative standalone selling price of the related performance obligations satisfied and the contractual billing terms. Deferred revenue for periods presented primarily relates to service contracts where the service fees are billed up-front, generally quarterly or annually, prior to services being performed. The associated deferred revenue is generally recognized over the term of the service period. The Company did not have any significant impairment losses on its contract assets for any period presented.

Deferred Revenue and Deferred Cost of Revenue

Deferred revenue consists of deferred product revenue and deferred service revenue. Deferred product revenue arises from timing differences between the shipment of product and satisfaction of all revenue recognition criteria consistent with the Company’s revenue recognition policy. Deferred service revenue results from the advance payment for services to be delivered over a period of time. Deferred cost of revenue consists of the direct costs associated with the manufacturing of units and direct service upgrade costs for which the revenue has been deferred in accordance with the Company’s revenue recognition policies. Deferred revenue and associated deferred cost of revenue expected to be realized within one year are classified as current liabilities and current assets, respectively.

Customer Advances

Customer advances represent payments made by customers in advance of product shipment. In general, customer advances are required for a contract to be recognized in our backlog.

Property and Equipment

Property and equipment are stated at cost and are depreciated using the straight‑line method over the estimated useful lives of the related assets. Leasehold improvements are depreciated on a straight‑line basis over the remaining term of the lease or the estimated useful life of the asset, whichever is shorter. Machinery and equipment are depreciated over five years. Furniture and fixtures are depreciated over four years. Computer and office equipment and computer software are depreciated over three years. Repairs and maintenance costs, which are not considered improvements and do not extend the useful life of the property and equipment, are expensed as incurred.

Software Capitalization Costs

Costs for the development of new software products and substantial enhancements to existing software products are expensed as incurred until technological feasibility has been established, at which time any additional costs would be capitalized. No costs associated with the development of software have been capitalized as the Company believes its current software development process is essentially completed concurrent with the establishment of technological feasibility.

Impairment of Long‑Lived Assets

The Company reviews long‑lived assets, including intangible assets, property and equipment, for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable using pretax undiscounted cash flows. Impairment, if any, is measured as the amount by which the carrying value of a long‑lived asset exceeds its fair value.

Goodwill and Purchased Intangible Assets

Goodwill is not amortized, but is evaluated for impairment on an annual basis and when impairment indicators are present. The Company has assessed that it has one operating segment and one reporting unit, and the consolidated net assets, including existing goodwill and other intangible assets, are considered to be the carrying value of the reporting unit. The Company estimates the fair value of the reporting unit based on the Company’s closing stock price on the trading day closest to the annual review date multiplied by the outstanding shares on that date. If the carrying value of the reporting unit is in excess of its fair value, an impairment may exist, and the Company must perform the second step of the analysis, in which the implied fair value of the goodwill is compared to its carrying value to determine the impairment charge, if any. If the estimated fair value of the reporting unit exceeds the carrying value of the reporting unit, goodwill is not impaired and no further analysis is required. The Company adopted the new accounting guidance that simplifies the testing for goodwill impairment in the first quarter of fiscal 2019. Refer to Note 2, Recent Accounting Pronouncements. There was no impairment of goodwill identified in the fiscal years ended June 30, 2019, 2018 and 2017.

Purchased intangible assets other than goodwill, including developed technology are amortized on a straight‑line basis over their estimated useful lives unless their lives are determined to be indefinite. Purchased intangible assets are carried at cost, less accumulated amortization. Amortization is computed over the estimated useful lives of the respective assets which range from approximately one to seven years.

Shipping and Handling

The Company’s billings for shipping and handling for product shipments to customers are included in cost of products. Shipping and handling costs incurred for inventory purchases are capitalized in inventory and expensed in cost of products.

Advertising Expenses

The Company expenses the costs of advertising and promoting its products and services as incurred. Advertising expenses were approximately $0.5 million, $0.4 million and $0.4 million for the years ended June 30, 2019, 2018 and 2017, respectively, and are included in selling and marketing expense in the consolidated statements of operations.

Research and Development Costs

Costs related to research, design and development of products are charged to research and development expense as incurred. These costs include direct compensation, benefits, and other headcount related costs for research and development personnel; costs for materials used in research and development activities; costs for outside services and allocated portions of facilities and other corporate costs. The Company has entered into research and clinical study arrangements with selected hospitals, cancer treatment centers, academic institutions and research institutions worldwide. These agreements support the Company’s internal research and development capabilities.

Share‑Based Compensation

The Company issues stock‑based compensation awards to employees and directors in the form of stock options, restricted stock units (RSUs), performance stock units (PSUs), market stock units (MSUs) and employee stock purchase plan (ESPP) awards (collectively, awards).

The Company measures and recognizes compensation expense for all stock‑based awards based on the awards’ fair value. Share‑based compensation for RSUs and PSUs is measured based on the value of the Company’s common stock on the grant date. The Company uses the Monte‑Carlo simulation model to estimate the fair value of MSUs. Share‑based compensation for employee stock options and ESPP awards are measured on the date of grant using a Black‑Scholes option pricing model.

Awards vest either on a graded schedule or in a lump sum. The Company determines the fair value of each award as a single award and recognizes the expense on a straight‑line basis over the service period of the award, which is generally the vesting period. The exercise price of stock options granted is equal to the fair market value of the Company’s common stock on the date of grant. Stock options expire ten years from the date of grant.

Share‑based compensation expense for stock options, RSUs, PSUs and the ESPP awards is based on awards ultimately expected to vest, and the expense is recorded net of estimated forfeitures. The Company recognizes expense for MSUs net of estimated forfeitures and does not adjust the expense for subsequent changes in the expected outcome of the market‑based vesting conditions.

Loss Contingencies

The Company is involved in various lawsuits, claims and proceedings that arise in the ordinary course of business. The Company records a provision for a liability when it believes that it is both probable that a liability has been incurred and the amount can be reasonably estimated. Significant judgment is required to determine both probability and the estimated amount. The Company reviews these provisions quarterly and adjusts these provisions to reflect the impact of negotiations, settlements, rulings, advice of legal counsel, and updated information.

Net Loss Per Common Share

Basic and diluted net loss per share is computed by dividing net loss attributable to stockholders by the weighted average number of common shares outstanding during the year.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share attributable to stockholders follows (in thousands):

	Years Ended June 30,
	2019			2018			2017
Numerator:
Net loss used to compute basic and diluted loss per share	$	(16,430	)	$	(23,899	)	$	(29,579	)
Denominator:
Weighted average shares used to compute basic and diluted loss per share		87,465			84,893			82,495

The potentially dilutive shares of the Company’s common stock resulting from the assumed exercise of outstanding stock options, the vesting of Restricted Stock Units (RSU), Market Stock Units (MSU) and Performance Stock Units (PSU), and the purchase of shares under the Employee Stock Purchase Program (ESPP), as determined under the treasury stock method, are excluded from the computation of diluted net loss per share because their effect would have been anti‑dilutive. Additionally, the 3.75% Convertible Notes due August 2022 (the “3.75% Convertible Notes”), the 3.50% Convertible Senior Notes due February 1, 2018 (the “3.50% Convertible Notes”), the 3.50% Series A Convertible Notes (the “3.50% Series A Convertible Notes”) due February 1, 2018 are included in the calculation of diluted net income per share only if their inclusion is dilutive for periods during which the notes were outstanding.

The following table sets forth all potentially dilutive securities excluded from the computation in the table above because their effect would have been anti‑dilutive (in thousands):

	As of June 30,
	2019		2018		2017
Stock options		5,220		2,684		2,463
RSUs, PSUs and MSUs		3,725		5,159		5,227
3.50% Convertible Notes		—		—		8,378
		8,945		7,843		16,068

Outstanding Convertible Notes—Diluted Share Impact

The 3.75% Convertible Notes and the 3.50% Series A Convertible Notes have an optional physical (share), cash or combination settlement feature and contain certain conditional conversion features. The 3.50% Series A Convertible Notes were retired in February 2018. Due to the optional cash settlement feature and management’s intent to settle the principal amount thereof in cash, the shares of our common stock issuable upon conversion of the outstanding principal amount of the 3.75% Convertible Notes outstanding as of June 30, 2019, totaling approximately 14.9 million shares of our common stock, were not included in the basic and diluted net loss per common share table above.

Income Taxes

The Company is required to estimate its income taxes in each of the tax jurisdictions in which it operates prior to the completion and filing of tax returns for such periods. This process involves estimating actual current tax expense together with assessing temporary differences in the treatment of items for tax purposes versus financial accounting purposes that may create net deferred tax assets and liabilities. The Company accounts for income taxes under the asset and liability method, which requires, among other things, that deferred income taxes be provided for temporary differences between the tax bases of the Company’s assets and liabilities and their financial statement reported amounts. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses, research and development credit carryforwards and other deferred tax assets.

The Company records a valuation allowance to reduce its deferred tax assets to the amount the Company believes is more likely than not to be realized. Because of the uncertainty of the realization of the deferred tax assets, the Company has recorded a full valuation allowance against its domestic and certain foreign net deferred tax assets.

Accumulated Other Comprehensive Loss

The components of comprehensive loss consist of net loss, unrealized gains and losses on available‑for‑sale investments, changes in foreign currency exchange rate translation and net changes related to a defined benefit pension plan. The unrealized gains and losses on available‑for‑sale investments, changes in foreign currency exchange rate translation and net changes related to the defined benefit pension plan are excluded from earnings and reported as a component of stockholders’ equity. The foreign currency translation adjustment results from those subsidiaries not using the United States dollar as their functional currency since the majority of their economic activities are primarily denominated in their applicable local currency. Accordingly, all assets and liabilities related to these operations are translated at the current exchange rates at the end of each period. The resulting cumulative translation adjustments are recorded directly to the accumulated other comprehensive loss account in stockholders’ equity. Revenues and expenses are translated at average exchange rates in effect during the period.

Recent Accounting Pronouncements

12 Months Ended

Jun. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Recent Accounting Pronouncements

Note 2. Recent Accounting Pronouncements

Accounting Pronouncement Recently Adopted

In June 2018, the Financial Accounting Standard Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2018-7, Compensation – Stock Compensation (Topic 718) — Improvements to Nonemployee Share-Based Payment Accounting. This guidance supersedes ASC 505-50 and expands the scope of ASC 718 to include all share-based payment arrangements related to the acquisition of goods and services from both nonemployees and employees. The amendments should be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption. The guidance permits early adoption and was adopted by the Company in the first quarter of fiscal year 2019. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures.

In May 2017, the FASB issued ASU No. 2017-09, Compensation—Stock Compensation (Topic 718)—Scope of Modification Accounting. This guidance redefines which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting for a share-based payment. Modification accounting will not be applied if the following are the same immediately before and after the change: fair value, vesting conditions, and classification. The Company adopted ASU No. 2017-09 as required in the first quarter of fiscal year 2019 on a prospective basis. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures.

In March 2017, the FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715)—Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This guidance revises the presentation of employer-sponsored defined benefit pension and other postretirement plans for the net periodic benefit cost in the statement of operations and requires that the service cost component of net periodic benefit be presented in the same income statement line items as other employee compensation costs for services rendered during the period. The other components of the net benefit costs are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of income from operations. This guidance allows only the service cost component of net periodic benefit costs to be eligible for capitalization. In addition, changes to the presentation of benefit costs were required to be adopted retrospectively, while changes to the capitalization of service costs into inventories were required to be adopted prospectively. The standard permits, as a practical expedient, use of the amounts disclosed in the pension plans footnote for the prior comparative periods as the estimation basis for applying the retrospective presentation requirement. The Company adopted ASU No. 2017-07 as required in the first quarter of fiscal year 2019, and the adoption of this ASU did not have a material impact on the Company’s consolidated financial statements and related disclosures.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which clarifies the presentation and classification of certain cash receipts and cash payments in the statement of cash flows. The amendments in the update provide guidance on eight specific cash flow issues. The amendments to the guidance should be applied using a retrospective transition method for each period presented and, if it is impracticable to apply all of the amendments retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company adopted ASU No. 2016-15 as required in the first quarter of fiscal year 2019. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures.

In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance changes accounting for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. In addition, it clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The Company adopted this ASU No. 2016-01 as required in the first quarter of fiscal year 2019 on a required modified retrospective approach. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other Topics (Topic 350)—Simplifying the Test for Goodwill Impairment. This guidance simplifies the measurement of goodwill by eliminating the Step 2 impairment test. The new guidance requires companies to perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. This guidance will be effective for the Company beginning in its first quarter of fiscal 2021. The amendment is required to be adopted prospectively. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted this guidance in the first quarter of fiscal year 2019 and adoption of this ASU did not have any impact on its consolidated financial statements and related disclosures.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), to supersede nearly all existing revenue recognition guidance under GAAP. The core principle of ASU 2014-09 is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing GAAP, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 is required to be adopted, using either of two methods: (i) retrospective to each prior reporting period presented with the option to elect certain practical expedients as defined within ASU 2014-09; or (ii) retrospective with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application and providing certain additional disclosures. The Company adopted the new revenue standards as of July 1, 2018, using the modified retrospective transition method applied to those contracts which were not completed as of that date.

The Company completed its assessment of the impact this guidance has on its consolidated financial statements and related disclosures. Based on that assessment, the Company concluded the significant impact areas were recognizing revenue from sales of systems at the time of transfer of control, which is generally upon delivery, the capitalization and amortization of incremental costs of obtaining a contract, primarily related to certain bonuses and sales commissions, change in SSP and the removal of software revenue recognition rules along with the elimination of revenue deferral for cash basis customers. Under the new standards, the Company capitalizes incremental contract acquisition costs, such as certain bonuses and sales commissions, and amortizes such costs over the period which the Company benefits, as estimated by management, which may extend beyond the initial contract term. The Company amortizes capitalized bonuses and sales commissions over a period of five years commencing upon the initial transfer of control of the system to the customer. The pattern of amortization is commensurate with the pattern of transfer of control of the performance obligations to the customer. The Company elected to use the practical expedient in ASC 340-40-25-4 and expense commissions related to service renewals and upgrades with a renewal contract term of one year or less as incurred. The Company recorded a net reduction to opening accumulated deficit of $5.1 million, net of tax, as of July 1, 2018 due to the cumulative impact of adopting ASC 606, with the impact primarily related to the deferral of incremental costs to obtain contracts.

Under ASC 606, product revenue for direct sales are accelerated to reflect transfer of control upon delivery while an element of installation is deferred until performed. Prior to the adoption of ASC 606, the Company deferred revenue until installation had occurred. The revenue recognition method for indirect sales and service revenues is unchanged under the new guidance.

Refer to Note 3, Revenue, to the Consolidated Financial Statement on this Annual report for the detailed impact of adopting ASC 606.

Accounting Pronouncements Not Yet Effective

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, that allows companies to reclassify from Accumulated Other Comprehensive Income to Retained Earnings stranded tax effects resulting from the enactment of the Tax Cuts and Jobs Act (the "Tax Act"). The guidance will be effective for the Company in its first quarter of fiscal 2020. Early adoption is permitted. The guidance should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act is recognized. The Company has not yet selected a transition method, has not yet determined whether it will elect early adoption and is currently evaluating the impact of the adoption of this standard on its consolidated financial statements and related disclosures.

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging. This guidance simplifies the application and administration of hedge accounting. The guidance amends the presentation and disclosure requirements and changes how companies assess effectiveness. The guidance is intended to more closely align hedge accounting with companies' risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The guidance will be effective for the Company in its first quarter of fiscal 2020. Early adoption is permitted. The guidance is required to be adopted on a prospective basis. The Company will not early adopt and does not believe the adoption of this standard will have a material impact on its consolidated financial statements and related disclosures.

In June 2016, the FASB issued ASU No. 2016-13 Measurement of Credit Losses on Financial Instruments. ASU No. 2016-13 requires measurement and recognition of expected credit losses for financial assets held. This guidance will be effective for the Company in the first quarter of fiscal 2021 and must be adopted using a modified retrospective approach, with certain exceptions. Early adoption is permitted beginning in the first quarter of fiscal 2020. The Company has not yet decided whether it will early adopt and is currently evaluating the impact of the adoption of this standard on its consolidated financial statements and related disclosures.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" (ASU 2016-02 or Topic 842), which requires lessees to recognize right-of-use (ROU) assets and lease liabilities arising from operating and financing leases with terms longer than 12 months in the consolidated balance sheets and to disclose key information about leasing arrangements. In July 2018, the FASB issued ASU 2018-11, "Leases (Topic 842): Targeted Improvements (ASU 2016-02 or Topic 842)" allowing an alternative modified transition method. Under this method, the cumulative-effect adjustment to the opening balance of retained earnings is recognized on the date of adoption with comparative prior periods not being restated. The new standard, including subsequent amendments is effective for our interim and annual periods beginning July 1, 2019. The Company will adopt the new guidance in the first quarter of fiscal year 2020 using the alternative modified transition basis, thereby recognizing the cumulative effect of initially applying Topic 842 as an adjustment to opening balance sheet on the adoption date, without revising the balances in comparative periods. The Company plans to elect the package of transitional practical expedients allowing, among other provisions, the Company not to reassess under the new standard its prior conclusions about lease identification, lease classification and initial direct cost, for any existing leases on the adoption date. For the facility and car leases, the Company intends to elect to account for lease and non-lease components as a single lease component. The Company intends to make an accounting policy election not to record leases that, at the lease commencement date, have a lease term of 12 months or less on the balance sheet. The Company has substantially completed its evaluation of the new lease guidance implementation and assessed the effect of the adoption on its consolidated financial statements. In connection with the adoption of the new guidance, the Company expects to recognize ROU asset ranging from $29.6 million to $31.6 million and lease liability ranging from $33.5 million to $35.5 million in its balance sheet as of July 1, 2019, with no impact to its results of operations and cash flows. The difference between the leased assets and lease liabilities represents the net position of existing prepaid rent and deferred rent liabilities balance, resulting from historical straight-lining of operating leases, which will be effectively reclassified upon adoption to reduce the measurement of the leased assets. The Company believes that substantially all of its undiscounted future minimum operating lease commitments based on its current lease portfolio that were not recognized on its consolidated balance sheet as of June 30, 2019 but disclosed in Note 9 to the consolidated financial statements, will be subject to the new standard.

Revenue

12 Months Ended

Jun. 30, 2019

Revenue From Contract With Customer [Abstract]

Revenue

Note 3. Revenue

On July 1, 2018, the Company adopted ASC 606 electing the modified retrospective method for contracts that were still open as of July 1, 2018. Results for reporting periods after July 1, 2018 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with legacy accounting guidance under ASC 605.

The beginning net cumulative-effect adjustment to retained earnings for the adoption of ASC 606 is as follows:


	Balance at			Adjustment Due to			Balance as Reported at
(Dollars in thousands)	July 1, 2018			ASC 606			June 30, 2018
Assets:
Account receivable, net	$	66,251		$	257		$	65,994
Deferred cost of revenue - current		677			(464	)		1,141
Prepaid expenses and other current assets		16,239			670			15,569
Other assets		17,416			5,840			11,576
Liabilities and Stockholders' Equity:
Other accrued liabilities		23,059			611			22,448
Deferred revenue - current		75,515			111			75,404
Long-term other liabilities		9,075			467			8,608
Accumulated deficit		(469,171	)		5,114			(474,285	)

Select consolidated balance sheets line items, which reflect the adoption of ASC 606 are as follows:

	June 30, 2019
(Dollars in thousands)	As Reported			Adjustments			Balances Without Adoption
Assets:
Account receivable, net	$	111,885		$	6,568		$	105,317
Deferred cost of revenue - current		146			(20,124	)		20,270
Prepaid expenses and other current assets		24,205			3,508			20,697
Other assets		17,373			6,893			10,480
Liabilities and Stockholders' Equity:
Other accrued liabilities		32,742			760			31,982
Deferred revenue - current		78,332			(31,220	)		109,552
Long-term other liabilities		9,646			1,200			8,446
Accumulated deficit		(485,540	)		26,104			(511,644	)

Select consolidated statements of operations and comprehensive loss line items for the year ended June 30, 2019, which reflect the adoption of ASC 606 are as follows:

	Year Ended June 30, 2019
(Dollars in thousands)	As Reported			Adjustments			Balances Without Adoption
Net revenue	$	418,785		$	37,861		$	380,924
Cost of goods sold		256,134			19,257			236,877
Other expense, net		14,927			(622	)		15,549
Research and development		56,493			(307	)		56,800
Selling and marketing		55,998			(1,108	)		57,106
General and administrative		49,577			(657	)		50,234
Provision for income taxes		2,086			308			1,778
Net loss		(16,430	)		20,990			(37,420	)
Net loss per share - basic and diluted	$	(0.19	)	$	0.23		$	(0.42	)

The adoption of ASC 606 had no impact to net cash from or used in operating, investing or financing activities in the Company's consolidated statements of cash flows.

Contract Balances

The timing of revenue recognition, billings, and cash collections results in trade, unbilled receivables, and deferred revenues on the consolidated balance sheets. The Company may offer longer or extended payments of more than one year for qualified customers in some circumstances. At times, revenue recognition occurs before the billing, resulting in an unbilled receivable, which represents a contract asset. The contract asset is a component of accounts receivable and other assets for the current and non-current portions, respectively.

When the Company receives advances or deposits from customers before revenue is recognized, this results in a contract liability. It can take up to two and half years from the time of order to revenue recognition due to the Company’s long sales cycle.

Changes in the contract assets and contract liabilities are as follows:

	June 30, 2019		July 1, 2018		Change
(Dollars in thousands)	Amount		Amount		$			%
Assets:
Unbilled accounts receivable – current (1)	$	5,260	$	3,218		2,042			63
Interest receivable – current (2)		361		—		361			100
Long-term accounts receivable (3)		4,116		6,833		(2,717	)		(40	)
Interest receivable – non-current (3)		1,255		611		644			105
Liabilities:
Customer advances		20,395		22,896		(2,501	)		(11	)
Deferred revenue – current		78,332		75,515		2,817			4
Deferred revenue – non-current		26,639		20,976		5,663			27

(1)	Included in accounts receivable on consolidated balance sheets

(2)	Included in prepaid expenses and other current assets on consolidated balance sheets

(3)	Included in other assets on consolidated balance sheets

During fiscal 2019, contract assets changed primarily due to the contractual timing of billings occurring after the revenues were recognized and payment terms exceeding 12 months. Contract liabilities changed due to timing of system sales for which the warranty has not yet started and was deferred.

Changes in deferred revenue from contracts with customers are as follows:

	Year Ended
(Dollars in thousands)	June 30, 2019
Balance at beginning of period	$	96,491
New billings		427,264
Recognition of deferred revenue from opening balance		(78,614	)
Recognition of new additions		(340,170	)
Balance at end of period	$	104,971

Remaining Performance Obligations

Remaining performance obligations represent deferred revenue from open contracts for which performance has already started and the transaction price from signed contracts for which performance has not yet started. Service contracts in general are considered month-to-month contracts, and the Company has elected the practical expedient available in the guidance related to ASC 606, to not disclose the value of unsatisfied performance obligations for contracts with an original expected duration of one year or less.

As of June 30, 2019, total remaining performance obligations amounted to $863.8 million. Of this total amount, $84.5 million related to long-term warranty and service, which is expected to be recognized over the remaining warranty period for systems that have been delivered. For systems that have been delivered but not yet installed, management estimates the timing of installation since warranty starts upon installation.

The following table represents the Company's remaining performance obligations related to long-term warranty and service as of June 30, 2019 and the estimated revenue expected to be recognized:

	Fiscal years of revenue recognition
(Dollars in thousands)	2020		2021		2022		Thereafter
Long-term warranty and service	$	32,853	$	27,361	$	13,333	$	10,964

For the remaining $779.3 million of performance obligations, the Company estimates 22% to 31% will be recognized in the next 12 months, and the remaining 69% to 78% will be recognized in the 30 months thereafter. The Company’s historical experience indicates that some of its customers will cancel or renegotiate contracts as economic conditions change or when product offerings change during the long sales cycle. Based on historical cancellation, about 17% to 27% of the Company’s contracts may never result in revenue due to cancellation.

The time bands reflect management’s best estimate of when the Company will transfer control to the customer and may change based on timing of shipment, readiness of customers’ facilities for installation, installation requirements, and availability of products.

Capitalized Contract Costs

The Company capitalizes and amortizes the incremental costs of obtaining a contract, primarily related to certain bonuses and sales commissions. The capitalized bonuses and sales commissions are amortized over a period of five years commencing upon the initial transfer of control of the system to the customer. The pattern of amortization is commensurate with the pattern of transfer of control of the performance obligations to the customer.

The opening balance of capitalized costs to obtain a contract was $5.9 million as of July 1, 2018. As of June 30, 2019, the balance of capitalized costs to obtain a contract was $8.4 million. The Company has classified the capitalized costs to obtain a contract as a component of prepaid expenses and other current assets and other assets with respect to the current and non-current portions of capitalized costs, respectively, on the consolidated balance sheets. The Company incurred a $0.5 million impairment loss for the periods presented. During the year ended June 30, 2019, the Company recognized $2.2 million in expense related to the amortization of the capitalized contract costs.

Supplemental Financial Information

12 Months Ended

Jun. 30, 2019

Supplemental Financial Information Disclosure [Abstract]

Supplemental Financial Information

Note 4. Supplemental Financial Information

Consolidated Balance Sheet

Accounts receivable, net

Accounts receivable, net consisted of the following (in thousands):

	June 30, 2019			June 30, 2018
Accounts receivable	$	107,230		$	63,027
Unbilled fees and services		5,260			3,218
		112,490			66,245
Less: Allowance for doubtful accounts		(605	)		(251	)
Accounts receivable, net	$	111,885		$	65,994

The Company received payment or had credits of $0.2 million and added $0.6 million to the allowance for doubtful accounts in fiscal 2019. The Company received payment or had credits of $0.2 million, added $0.1 million and wrote off $0.1 million from the allowance for doubtful accounts in fiscal 2018.

Financing receivables

A financing receivable is a contractual right to receive money, on demand or on fixed or determinable dates, that is recognized as an asset in the Company’s balance sheet. The Company’s financing receivables, consisting of its accounts receivable with contractual maturities of more than one year and sales‑type leases, totaled $4.3 million and $6.9 million at June 30, 2019 and 2018, respectively, and are included in Other Assets in the consolidated balance sheets. The $4.3 million in financing receivables at June 30, 2019 related to contractual maturities of more than one year. Of the $6.9 million in financing receivables at June 30, 2018, $1.0 million related to sales‑type leases with customers while the remaining $5.9 million related to contractual maturities of more than one year. The Company evaluates the credit quality of an obligor at contract inception and monitors credit quality over the term of the underlying transactions. The Company performs a credit analysis for all new customers and reviews payment history, current order backlog, financial performance of the customers and other variables that augment or mitigate the inherent credit risk of a particular transaction. Such variables include the underlying value and liquidity of the collateral, the essential use of the equipment, the contract term and the inclusion of credit enhancements, such as guarantees, letters of credit or security deposits. The Company classifies accounts as high risk when it considers the financing receivable to be impaired or when management believes there is a significant near‑term risk of non‑payment. The Company performed an assessment of the allowance for credit losses related to its financing receivables as of June 30, 2019. Based upon such assessment, the Company recorded adjustments of $3.6 million and less than $0.1 million to the allowance for credit losses related to such financing receivables as of June 30, 2019 and as of June 30, 2018, respectively.

A summary of the Company’s financing receivables is presented as follows (in thousands):

June 30, 2019	Lease Receivables		Financed Service Contracts and Other			Total
Gross	$	—	$	13,288		$	13,288
Residual value		—		—			—
Unearned income		—		(1,535	)		(1,535	)
Allowance for credit loss		—		(3,582	)		(3,582	)
Total, net	$	—	$	8,171		$	8,171
Reported as:
Current	$	—	$	3,902		$	3,902
Non-current		—		4,269			4,269
Total, net	$	—	$	8,171		$	8,171

June 30, 2018	Lease Receivables			Financed Service Contracts and Other		Total
Gross	$	1,588		$	8,009	$	9,597
Residual value		—			—		—
Unearned income		(137	)		—		(137	)
Allowance for credit loss		—			—		—
Total, net	$	1,451		$	8,009	$	9,460
Reported as:
Current	$	432		$	2,139	$	2,571
Non-current		1,019			5,870		6,889
Total, net	$	1,451		$	8,009	$	9,460

Actual cash collections may differ from the contracted maturities due to early customer buyouts, refinancing, or defaults. There are no future minimum lease payments to be received as of June 30, 2019.

Inventories

Inventories consisted of the following (in thousands):

	June 30, 2019		June 30, 2018
Raw materials	$	40,966	$	37,144
Work-in-process		18,152		17,703
Finished goods		61,705		53,693
Inventories	$	120,823	$	108,540

Property and Equipment, net

Property and equipment consisted of the following (in thousands):

	June 30, 2019			June 30, 2018
Furniture and fixtures	$	2,728		$	2,927
Computer and office equipment		11,183			11,315
Software		11,236			11,307
Leasehold improvements		25,741			25,423
Machinery and equipment		45,472			47,065
Construction in progress		1,658			5,629
		98,018			103,666
Less: Accumulated depreciation		(80,896	)		(79,968	)
Property and equipment, net	$	17,122		$	23,698

Depreciation and amortization expense related to property and equipment for the years ended June 30, 2019, 2018 and 2017 was $8.1 million, $9.6 million and $10.3 million, respectively.

Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in accumulated other comprehensive income (loss) by component (in thousands):

	Foreign Currency Items			Unrealized Gains and (Losses) on Available-for- Sale Securities			Change in Defined Pension Benefit Obligation			Total
Balance at June 30, 2017	$	1,154		$	(89	)	$	(1,117	)	$	(52	)
Other comprehensive income		83			89			973			1,145
Balance at June 30, 2018	$	1,237		$	—		$	(144	)	$	1,093
Other comprehensive (loss)		(247	)		—			(856	)		(1,103	)
Balance at June 30, 2019	$	990		$	—		$	(1,000	)	$	(10	)

Consolidated Statements of Operations

Other expense, net consisted of the following (in thousands):

	Years Ended June 30,
(in thousands)	2019			2018			2017
Interest expense	$	(15,084	)	$	(14,959	)		(17,302	)
Foreign currency transaction loss		(665	)		(986	)		(1,267	)
Other (expense) income		822			(3,279	)		(149	)
Total other expense, net	$	(14,927	)	$	(19,224	)	$	(18,718	)

Goodwill and Purchased Intangible Assets

12 Months Ended

Jun. 30, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Purchased Intangible Assets

Note 5. Goodwill and Purchased Intangible Assets

Goodwill

Goodwill as of June 30, 2019 and 2018 and changes in the carrying amount of goodwill for the respective periods are as follows (in thousands):

	As of June 30,
	2019			2018
Balance at the beginning of the period	$	57,855		$	57,812
Currency translation		(85	)		43
Balance at the end of the period	$	57,770		$	57,855

In fiscal 2019, the Company performed its annual goodwill impairment test and determined that there was no impairment to goodwill. The Company will continue to monitor its recorded goodwill for indicators of impairment.

Purchased Intangible Assets

The Company’s intangible assets associated with purchased patent license are as follows (in thousands):

		As of June 30, 2019							As of June 30, 2018
	Useful Lives	Gross Carrying Amount		Accumulated Amortization			Net Amount		Gross Carrying Amount		Accumulated Amortization			Net Amount
	(in years)
Patent license	7	$	1,000	$	(321	)	$	679	$	1,000	$	(179	)	$	821

During fiscal 2017, the Company purchased a patent license with a useful life of seven years. The Company did not identify any triggering events that would indicate potential impairment of its definite‑lived intangible and long‑lived assets as of June 30, 2019 and 2018.

Amortization expense related to purchased intangible assets was $0.1 million, $0.1 million and $7.7 million for the years ended June 30, 2019, 2018 and 2017, respectively.

The estimated future amortization expense of purchased intangible assets as of June 30, 2019 is as follows (in thousands):

Year Ending June 30,	Amount
2020		143
2021		143
2022		143
2023		143
2024		107
	$	679

Investments

12 Months Ended

Jun. 30, 2019

Investments Debt And Equity Securities [Abstract]

Investments

Note 6. Investments

The Company considers all highly liquid investments held at major banks, certificates of deposit and other securities with original maturities of three months or less to be cash equivalents.

The Company classifies all of its investments as available-for-sale at the time of purchase because management intends for these investments to be available for current operations and includes these investments on its balance sheet as short-term investments. Investments with original maturities longer than three months include commercial paper, U.S. agency securities, non-U.S. government securities and investment-grade corporate debt securities. Investments classified as available-for-sale are recorded at fair market value with the related unrealized gains and losses included in accumulated other comprehensive income (loss), a component of stockholders’ equity. Realized gains and losses are recorded based on specific identification of each security’s cost basis.

In January 2018, the Company sold all of its available-for-sale investments for proceeds of $23.9 million and realized an insignificant loss on the sale of its investments. The Company reviews its investments quarterly to identify and evaluate investments that have an indication of possible impairment. Gross realized gains and losses were insignificant for the year ended June 30, 2018 and the year ended June 30, 2017. Upon the sale of its available for sale securities, the Company reclassified $77 thousand from other comprehensive income to Other expense, net.

The Company had an investment in a technology company, which had historically been accounted for using the cost method and recorded in Other assets. Subsequent to such company’s initial public offering in October 2017, the Company owned approximately 143,000 shares of such company’s common stock. Considering the liquidity in these shares at the time, the Company reclassified its investment from Other assets to short-term investments. In the fourth quarter of fiscal 2018, the Company sold all of its shares for a proceed of $0.4 million and recognized a loss on the sale of $0.1 million.

The Company had no available-for-sale securities at June 30, 2019 or 2018.

The Company held zero positions as of June 30, 2018 that were in an unrealized loss position. Gross realized gains and gross realized losses were insignificant for the years ended June 30, 2018 and 2017.

Derivative Financial Instruments

12 Months Ended

Jun. 30, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Note 7. Derivative Financial Instruments

The Company utilizes foreign currency forward contracts with reputable financial institutions to manage its exposure of fluctuations in foreign currency exchange rates on certain intercompany balances and foreign currency denominated cash, customer receivables and liabilities. The Company does not use derivative financial instruments for speculative or trading purposes. These forward contracts are not designated as hedging instruments for accounting purposes. Principal hedged currencies include the Euro, Japanese Yen, Swiss Franc, and U.S. Dollar. The periods of these forward contracts range up to approximately three months and the notional amounts are intended to be consistent with changes in the underlying exposures. The Company intends to exchange foreign currencies for U.S. Dollars at maturity. There were no outstanding foreign currency forward contracts at the end of fiscal years 2019 and 2018.

The following table shows the effect of forward contracts not designated as hedging instruments and foreign currency transactions gains and losses, which were included in “Other expense, net” on the consolidated statements of operations in fiscal years (in thousands):

	Years ended June 30,
	2019			2018			2017
Foreign currency exchange gain (loss) on foreign contracts	$	17		$	(2,461	)	$	(1,322	)
Foreign currency transactions gain (loss)		(682	)		1,475			55

Fair Value Measurements

12 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 8. Fair Value Measurements

Fair value is an exit price representing the amount that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy contains three levels of inputs that may be used to measure fair value, as follows:

Level 1— Unadjusted quoted prices that are available in active markets for the identical assets or liabilities at the measurement date.

Level 2— Other observable inputs available at the measurement date, other than quoted prices included in Level 1, either directly or indirectly, including:

•

Quoted prices for similar assets or liabilities in active markets;

•

Quoted prices for identical or similar assets in non-active markets;

•

Inputs other than quoted prices that are observable for the asset or liability; and

•

Inputs that are derived principally from or corroborated by other observable market data.

Level 3— Unobservable inputs that cannot be corroborated by observable market data and require the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.

The Company had cash of $76.8 million and $83.1 million at June 30, 2019 and June 30, 2018, respectively.

Assets and Liabilities That Are Measured at Fair Value on a Nonrecurring Basis

The Company’s debt is measured on a non-recurring basis using Level 2 inputs based upon observable inputs of the Company’s underlying stock price and the time value of the conversion option, since an observable quoted price of the 3.75% Convertible Notes (collectively the “Notes”) are not readily available. The Revolving Credit Facility and the Term Loan (collectively, the “Credit Facilities”) are valued at market interest rates, which it considers to be a level 2 fair value measurement. The carrying value of these financial instruments approximate its estimated fair value as there have not been significant changes in the Company’s credit quality or capital markets that would suggest changes in interest rates since these Credit Facilities were amended in May 2019.

The following table summarizes the carrying value and estimated fair value of Credit Facilities and Notes (in thousands):

	June 30, 2019				June 30, 2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
3.75% Convertible Notes	$	72,730	$	84,227	$	69,382	$	86,666
Term Loan Facility		58,849		58,849		38,010		38,010
Revolving Credit Facility		28,265		28,265		23,685		23,685
Total	$	159,844	$	171,341	$	131,077	$	148,361

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Commitments and Contingencies

12 Months Ended

Jun. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 9. Commitments and Contingencies

Operating Lease and Long‑term Debt Commitments

The Company leases office and manufacturing space under non‑cancelable operating leases with various expiration dates through June 2025. Rent expense was $8.3 million, $9.2 million and $8.6 million for the years ended June 30, 2019, 2018 and 2017, respectively. The terms of some of the facility leases provide for rental payments on a graduated scale. For these leases, the Company recognizes rent expense on a straight‑line basis over the lease period, and has accrued for rent expense incurred but not paid.

The Company is also required to make semi‑annual interest payments on the Existing 3.75% Convertible Notes, and monthly interest payments on the Revolving Credit Facility and Term Loan. See Note 10, Debt, for details.

Future minimum lease payments under non‑cancelable operating lease agreements and long‑term principal and interest on the 3.75% Convertible Notes and Credit Facilities as of June 30, 2019 are as follows (in thousands):

Year Ending June 30,	Operating Leases		Long-Term Debt (1)
2020	$	8,675	$	9,807
2021		7,352		11,487
2022		7,159		29,086
2023		7,161		109,414
2024		5,118		51,672
Thereafter		2,610		—
Total	$	38,075	$	211,466

(1)

These amounts represent principal and interest cash payments over the contractual life of the debt obligations, including anticipated interest payments that are not recorded on the Company’s consolidated balance sheet. Any conversion, premium, redemption or purchase of the 3.75% Convertible Notes would impact cash payments noted in the preceding table.

Purchase Commitments

The Company’s purchase commitments and obligations include all open purchase orders and contractual obligations in the ordinary course of business, including commitments with contract manufacturers and suppliers, for which the Company has not received the goods or services and acquisition and licensing of intellectual property. A majority of these purchase obligations are due within a year. Although open purchase orders are considered enforceable and legally binding, the terms generally allows the Company the option to cancel, reschedule, and adjust its requirements based on the Company’s business needs prior to the delivery of goods or performance of services, and hence, have not been included in the table above.

Indemnities, Commitments and Guarantees

The Company enters into standard indemnification agreements with its landlords and all superior mortgagees and their respective directors, officers’ agents, and employees in the ordinary course of business. Pursuant to these agreements, the Company will indemnify, hold harmless, and agree to reimburse the indemnified party for losses suffered or incurred by the indemnified party, generally the landlords, in connection with any loss, accident, injury, or damage by any third‑party with respect to the leased facilities. The term of these indemnification agreements is from the commencement of the lease agreements until termination of the lease agreements. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, historically the Company has not incurred claims or costs to defend lawsuits or settle claims related to these indemnification agreements. The Company has not recorded any liability associated with its indemnification agreements as it is not aware of any pending or threatened actions that represent probable losses as of June 30, 2018.

In January 2019, the Company, through its wholly-owned subsidiary, Accuray Asia, entered into an agreement with CNNC High Energy Equipment (Tianjin) Co., Ltd. (the “CIRC Subsidiary”), a wholly-owned subsidiary of China Isotope & Radiation Corporation, to form a joint venture, CNNC Accuray (Tianjin) Medical Technology Co. Ltd. (the “JV”), to manufacture and sell radiation oncology systems in China.

The Company, through Accuray Asia, expects to make an initial capital contribution to the JV in stages, to be completed by December 31, 2019 in the form of in-kind contributions consisting of components for two full radiation oncology systems from our inventory in exchange for a 49% equity interest in the joint venture. Any remaining amount of capital contributions due, if not satisfied by such in-kind contributions, will be made by us, through Accuray Asia, in accordance with the schedule set by the board of directors of the JV.

Royalty Agreement

The Company has an exclusive license agreement with the Wisconsin Alumni Research Foundation (WARF), to make, use, sell and otherwise distribute products under certain of WARF’s patents anywhere in the world. The Company is required to pay WARF a royalty for each TomoTherapy System sold that includes the licensed technology. The license agreement expires upon expiration of the patents and may be terminated earlier if the Company so elects. WARF has the right to terminate the license agreement if the Company does not meet the minimum royalty obligation of $0.3 million per year, or if the Company commits any breach of the license agreement’s covenants. The Company recorded royalty costs of $0.6 million, $0.5 million and $0.5 million for the years ended June 30, 2019, 2018 and 2017, respectively, which were recorded in cost of revenue or deferred cost of revenue. The Company had accrued liabilities of approximately $0.2 million and $0.2 million at June 30, 2019 and 2018, respectively, related to this agreement.

Software License Indemnity

Under the terms of the Company’s software license agreements with its customers, the Company agrees that in the event the software sold infringes upon any patent, copyright, trademark, or any other proprietary right of a third‑party, it will indemnify its customer licensees against any loss, expense, or liability from any damages that may be awarded against its customer. The Company includes this infringement indemnification in all of its software license agreements and selected managed services arrangements. In the event the customer cannot use the software or service due to infringement and the Company cannot obtain the right to use, replace or modify the license or service in a commercially feasible manner so that it no longer infringes, then the Company may terminate the license and provide the customer a refund of the fees paid by the customer for the infringing license or service. The Company has not recorded any liability associated with this indemnification, as it is not aware of any pending or threatened actions that represent probable losses as of June 30, 2019.

Litigation

From time to time, the Company is involved in legal proceedings arising in the ordinary course of its business. The Company records a provision for a loss when it believes that it is both probable that a loss has been incurred and the amount can be reasonably estimated. Currently, management believes the Company does not have any probable and reasonably estimable losses related to any current legal proceedings and claims. Although occasional adverse decisions or settlements may occur, management does not believe that an adverse determination with respect to any of these claims would individually or in the aggregate materially and adversely affect the Company’s financial condition or operating results. Litigation is inherently unpredictable and is subject to significant uncertainties, some of which are beyond the Company’s control. Should any of these estimates and assumptions change or prove to have been incorrect, the Company could incur significant charges related to legal matters that could have a material impact on its results of operations, financial position and cash flows.

Debt

12 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Debt

Note 10. Debt

3.50% Convertible Senior Notes due February 2018

In February 2013, the Company issued 3.50% Convertible Senior Notes due 2018 (the “3.50% Convertible Notes”) under an indenture between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee. Holders of the 3.50% Convertible Notes were entitled to convert their notes at any time until the close of the business day immediately preceding the maturity date of February 1, 2018. The 3.50% Convertible Notes were convertible into common stock of the Company at an initial conversion rate equal to 187.6877 shares of common stock per $1,000 principal amount, which is equivalent to a conversion price of approximately $5.33 per share of common stock, subject to adjustment.

On January 30, 2018, the Company entered into exchange agreements (the “Exchange Agreements”) with the holders of the 3.50% Convertible Notes, which amended the original settlement terms of the notes and allowed the Company to settle the then outstanding $13.0 million principal balance of the 3.50% Convertible Notes and accrued interest in cash at maturity, and any excess equity value over the original conversion price in shares. In exchange for the agreement to settle in cash, the Company agreed to pay $0.3 million exchange premium. The $0.3 million exchange premium was accounted for as debt extinguishment and included in Other expense, net.

On February 1, 2018, pursuant to the Exchange Agreements, the Company paid $13.2 million in cash to settle outstanding principal and accrued interest, and on February 7, 2018 issued 253,000 shares of the Company’s common stock to the 3.50% Convertible Notes holders. The total number of shares was determined using a three-day volume weighted averaging price period and based on a prescribed formula in the Exchange Agreements. As a result, the 3.50% Convertible Notes were repaid in full and were not outstanding at June 30, 2018.

3.50% Series A Convertible Senior Notes due February 2018

In April 2014, the Company issued 3.50% Series A Convertible Senior Notes due 2018 (the “3.50% Series A Convertible Notes”) under an indenture between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee. Holders of the 3.50% Series A Convertible Notes were entitled to convert their notes at any time on or after November 1, 2017 until the close of business on the business day immediately preceding the maturity date of February 1, 2018. The initial conversion rate is 187.6877 shares of the Company’s common stock per $1,000 principal amount, which represents an initial conversion price of approximately $5.33 per share of the Company’s common stock.

Pursuant to the original settlement terms, the Company made an irrevocable net share settlement election and paid cash for principal plus accrued interest upon maturity to holders who did not elect to convert. Prior to maturity, one note holder elected to convert their notes and receive a combination of cash and shares at settlement. The number of shares was determined based on a prescribed formula in the indenture. On February 1, 2018, the Company paid an aggregate amount of $27.0 million in cash and delivered 1,252 shares of its common stock to settle the 3.50% Series A Convertible Notes. As a result, the 3.50% Series A Convertible Notes were repaid in full and were not outstanding at June 30, 2018.

3.75% Convertible Senior Notes due July 2022

In August 2017, the Company issued $85.0 million aggregate principal amount of its 3.75% Convertible Senior Notes due 2022 (the “3.75% Convertible Notes”) under an indenture between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee. $53.0 million aggregate principal amount of the 3.75% Convertible Notes were issued to certain holders of the Company’s outstanding 3.50% Convertible Notes and 3.50% Series A Convertible Notes (together, the “Existing Notes”) in exchange for approximately $47.0 million aggregate principal amount of the Existing Notes (the “Exchange”) and $32.0 million aggregate principal amount of the 3.75% Convertible Notes were issued to certain other qualified new investors for cash. The net proceeds of the cash issuance were used to repurchase approximately $28.0 million of Existing Notes (the “Repurchase”).

Holders of the 3.75% Convertible Notes may convert their notes at any time on or after April 15, 2022 until the close of the business day immediately preceding the maturity date. Prior to April 15, 2022, holders of the 3.75% Convertible Notes may convert their notes only under certain circumstances.

Upon conversion, the Company will have the right to pay cash, or deliver shares of common stock of the Company or a combination thereof, at the Company’s election. The initial conversion rate is 174.8252 shares of the Company’s common stock per $1,000 principal amount (which represents an initial conversion price of approximately $5.72 per share of the Company’s common stock). The conversion rate, and thus the conversion price, is subject to adjustment as further described below.

Holders of the 3.75% Convertible Notes who convert their notes in connection with a “make-whole fundamental change,” as defined in the indenture, may be entitled to a make-whole premium in the form of an increase in the conversion rate. Additionally, in the event of a “fundamental change,” as defined in the indenture, holders of the 3.75% Convertible Notes may require the Company to purchase all or a portion of their note at a fundamental change repurchase price equal to 100% of the principal amount of the 3.75% Convertible Notes, plus accrued and unpaid interest, if any, to, but not including, the fundamental change repurchase date. As of June 30, 2019, approximately $85.0 million aggregate principal amount was outstanding.

Revolving Credit Facility

On June 14, 2017, the Company entered into a credit and security agreement with a lender (the “Credit Agreement”). The Credit Agreement provides the Company with a revolving credit facility in the initial amount of $52.0 million (the “Revolving Credit Facility”). Availability for borrowings under the Revolving Credit Facility is subject to a borrowing base that is calculated as a function of the value of the Company’s eligible accounts receivable and eligible inventory, and the Company is required to maintain a minimum drawn balance of at least 30% of such availability. Interest on the borrowings under the Revolving Credit Facility is payable monthly in arrears at an annual interest rate of reserve-adjusted, 90-day LIBOR plus 4.50% and had initial maturity date of June 14, 2021.

In December 2017, concurrently with the Term Loan Agreement (as defined below), the Company entered into an amendment to the Credit Agreement (the “Amendment” and, collectively with the Credit Agreement, the “Amended Credit Agreement”). The Amendment reduced the maximum borrowings under the Revolving Credit Facility to $32.0 million and extended the maturity date of the Revolving Credit Facility to December 15, 2022.

In July 2018, the Company amended both the Amended Credit Agreement and the Term Loan Agreement. The amendments provide for, among other things, adjustments to the Fixed Charge Coverage Ratio such that in the case of the Defined Periods (as defined in the Amended Credit Agreement and the Term Loan Agreement) for (i) the fiscal quarter ending June 30, 2018 as well as (ii) the fiscal quarter ending March 31, 2019, the Fixed Charge Coverage Ratio is not less than 0.75 to 1.00 and 0.50 to 1.00, respectively. Other significant terms remain unchanged.

In December 2018, the Company amended the Amended Credit Agreement (“Amendment 3”) which, among other things, updated the calculation of the deferred revolving loan origination fee such that it is based on the amount of time elapsed from the effective date of Amendment 3. Other significant terms remain unchanged.

In May 2019, the Company amended the Amended Credit Agreement to, among other things, decrease the interest rate from 90-day LIBOR plus 4.50% to 90-day LIBOR plus 3.50% and extend the maturity date to May 30, 2024 and update the calculation of the deferred revolving loan origination fee such that it is based on the amount of time elapsed from the effective date of the May 2019 amendment. The Company accounted for the amendment as a modification of existing debt and deferred an insignificant amount of offering costs on the consolidated balance sheet as of June 30, 2019. As of June 30, 2019, approximately $28.3 million of aggregate principal amount was outstanding under the Revolving Credit Facility, and $1.1 million of unamortized debt costs associated with the Revolving Credit Facility was included in other assets on the condensed consolidated balance sheet.

Term Loan

In December 2017, the Company entered into a credit and security agreement with a lender (the “Term Loan Agreement”). The Term Loan Agreement provides for an initial term loan of $40.0 million with an additional tranche of $20.0 million undrawn and available through December 31, 2018, if specified conditions are met (the “Term Loan”). In connection with the Amendment, the Company used a portion of the net proceeds from the initial advance to repay a portion of the outstanding borrowings under the Revolving Credit Facility. Interest on the Term Loan is payable monthly in arrears at an annual interest rate of 6.75% plus 90-day LIBOR. The Term Loan Agreement matures December 15, 2022 and, if prepaid, has fees equal to 3%, 2%, and 1% of the prepayment amount if such termination occurs within the first year, the second year, and the third year of funding, respectively. The term of the loan is 60 months with interest only for the first 24 months followed by straight-line amortization of principal for the remaining months. In addition, the Company will pay an annual administrative fee of 0.25% and a final payment of 4.0% of the Term Loan amount.

In December 2018, the Company drew an additional $5.0 million under the Term Loan Agreement and in connection therewith entered into the second amendment to the Term Loan Agreement (“Amendment 2”) which, among other things, (i) extended the term loan tranche 2 commitment termination date for the remaining $15.0 million unfunded commitment from December 31, 2018 to June 30, 2019; (ii) provided that term loan tranche 2 may be drawn in two separate advances; and (iii) updated the calculation of the prepayment fee such that it is based on the amount of time elapsed from the effective date of Amendment 2.

In May 2019, the Company amended the Term Loan Agreement to, among other things, increase the loan tranch 2 commitment by $0.5 million, extend the maturity date to May 30, 2024, decrease the annual interest rate from 6.75% plus 90-day LIBOR to 5.50% plus 90-day LIBOR, and modify the calculation prepayment fee such that it is based on the amount of time elapsed from the effective date of the May 2019 amendment. The Company accounted for the amendment as a modification of existing debt and recorded approximately $1.5 million of debt discount costs associated with the amendment against long-term debt on the consolidated balance sheets as of June 30, 2019.

As of June 30, 2019, approximately $63.0 million aggregate principal amount was outstanding.

The following table presents the carrying value of all Credit Facilities and 3.75% Convertible Notes (in thousands):

	Revolving Credit Facility		3.75% Convertible Notes			Term Loan Facility			Total
Carrying amount of equity conversion component	$	—	$	14,650		$	—		$	14,650
Principal amount	$	28,265	$	85,000		$	63,031		$	176,296
Unamortized debt costs		—		(2,687	)		(1,231	)		(3,918	)
Unamortized debt discount		—		(9,583	)		(2,951	)		(12,534	)
Net carrying amount	$	28,265	$	72,730		$	58,849		$	159,844

A summary of interest expense on the Credit Facilities and Notes is as follows (in thousands):

	Year ended June 30,
	2019		2018		2017
Interest expense related to contractual interest coupon	$	10,185	$	9,953	$	9,465
Interest expense related to amortization of debt discount		3,370		3,377		4,052
Interest expense related to amortization of debt issuance costs		1,529		1,629		3,785
Total	$	15,084	$	14,959	$	17,302

Shareholders' Equity

12 Months Ended

Jun. 30, 2019

Stockholders Equity Note [Abstract]

Shareholders' Equity

Note 11. Shareholders’ Equity

At June 30, 2019, the Company had 8.9 million shares of common stock reserved for issuance under the stock incentive plans and the employee stock purchase plan.

Stock Incentive Plan and Employee Stock Purchase Plan

12 Months Ended

Jun. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Incentive Plan and Employee Stock Purchase Plan

Note 12. Stock Incentive Plan and Employee Stock Purchase Plan

As of June 30, 2019, the Company had three outstanding stock incentive plans: the 2016 Equity Incentive Plan, or the 2016 Plan; the 2007 Incentive Award Plan, or the 2007 Plan; and the 1998 Stock Incentive Plan, or the 1998 Plan. The 2016 Plan permits the granting of stock options, stock appreciation rights, restricted stock awards, performance shares, performance units, and restricted stock units, or RSUs. The vesting of RSUs granted under the 2016 Plan are primarily service‑based (over the requisite service period) while the vesting of performance units granted under the 2016 Plan are primarily performance‑based, or PSUs, or market‑based, or MSUs. Only employees of the Company are eligible to receive incentive stock options. Non‑employees may be granted non‑qualified stock options.

Stock options granted under the 2016 Plan have an exercise price of at least 100% of the fair market value of the underlying stock on the grant date. The stock options have 10 year contractual terms and generally become exercisable for 25% of the option shares one year from the date of grant and then ratably over the following 36 months. Service‑based RSUs granted under the equity plans generally vest 25% of the share units covered by the grant on each of the first through fourth anniversaries of the date of the grant, subject to the continued service of the grantee through each such date. However, certain of the outstanding RSUs under our equity plans vest 50% upon the first anniversary year of the grant date, and 50% upon the second anniversary year of the grant date. The Board of Directors has the discretion to use different vesting schedules.

As of June 30, 2019, the 2007 Plan and the 1998 Plan each continued to remain in effect; however, the Company can no longer grant equity awards under such plans.

The following table summarizes the share‑based compensation charges included in the Company’s consolidated statements of operations and comprehensive loss (in thousands):

	Years ended June 30,
	2019		2018		2017
Cost of revenue	$	1,666	$	1,866	$	1,991
Research and development		1,773		2,312		2,490
Selling and marketing		2,081		1,390		2,827
General and administrative		5,081		6,721		6,321
Total	$	10,601	$	12,289	$	13,629

The amount of capitalized share‑based compensation costs as components of inventory was insignificant at June 30, 2019, 2018 and 2017.

Stock Options

The fair value of each option is estimated at the date of grant using the Black‑Scholes option pricing formula with the following assumptions:

	Years Ended June 30,
	2019			2018			2017
Risk–free interest rate	1.94% - 2.81%				1.98	%		1.76	%
Dividend yield		—	%		—	%		—	%
Expected term	5.31 - 5.51				5.25			5.12
Expected volatility	47.0% - 47.1%				43.9	%		46.4	%

Determining Fair Value of Stock Options

The fair value of each grant of stock options was determined by the Company using the methods and assumptions discussed below. Each of these inputs is subjective and generally requires significant judgment to determine.

Valuation and Amortization Method—The Company estimates the fair value of its stock options using the Black‑Scholes option‑pricing model. This fair value is then amortized over the requisite service periods of the awards.

Expected Term—The Company estimates the expected term of stock option by taking the average of the vesting term and the contractual term of the option, as illustrated by the simplified method.

Expected Volatility—The expected volatility is derived from the Company’s historical stock volatility over a period approximately equal to the expected term of the options.

Risk‑Free Interest Rate—The risk‑free interest rate is based on the U.S. Treasury yield curve on the date of grant.

Dividend Yield—The dividend yield assumption is based on the Company’s history and expectation of no dividend payouts.

A summary of option activity under the Company’s incentive plan during the fiscal years is presented below (in thousands except per share and term amounts):

	Options Outstanding			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (In Years)		Aggregate Intrinsic Value
Balance at June 30, 2016		2,377			8.00		3.97	$	452
Options granted		760			5.05
Options exercised		(113	)		5.18
Options forfeited/expired		(561	)		13.38
Balance at June 30, 2017		2,463			6.05		5.42	$	191
Options granted		795			4.12
Options exercised		(109	)		4.02
Options forfeited/expired		(465	)		7.76
Balance at June 30, 2018		2,684			5.26		6.16	$	60
Options granted		3,359			4.09
Options exercised		(115	)		4.26
Options forfeited/expired		(708	)		5.51
Balance at June 30, 2019		5,220			4.50		7.97	$	11
Vested or Expected to vest at June 30, 2019		4,427			4.56
Exercisable at June 30, 2019		1,383		$	5.50

The aggregate intrinsic value in the table above represents the total pre‑tax intrinsic value (the difference between the fair value of the Company’s common stock on June 28, 2019 of $3.87 and the exercise price of the options that would have been received by option holders if all options exercisable had been exercised on June 30, 2019. The total intrinsic value of options exercised in the years ended June 30, 2019, 2018 and 2017 was approximately $0.1 million, $0.1 million and $0.1 million, respectively.

During the years ended June 30, 2019, 2018 and 2017, the Company recognized $1.4 million, $0.6 million and $0.5 million, respectively, of share‑based compensation expense for stock options granted to employees.

Tax benefits from tax deductions for exercised options and disqualifying dispositions in excess of the deferred tax asset attributable to stock compensation costs for such options are credited to additional paid‑in capital. Upon adoption of ASU 2016-09 on July 1, 2017, the benefit are recognized against income taxes. Realized excess tax benefits related to stock options exercises was zero for each of the years ended June 30, 2019, 2018 and 2017.

As of June 30, 2019, there was approximately $6.7 million of unrecognized compensation cost net of estimated forfeitures, related to unvested stock options, which is expected to be recognized over a weighted average period of 3.25 years.

The following table summarizes information about outstanding and exercisable options at June 30, 2019 (in thousands, except years and exercise price):

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Outstanding		Weighted Average Exercise Price
$3.71 – 4.00		584,809		8.27	$	3.97		235,615	$	4.00
$4.01 – 4.01		77,796		2.27		4.01		77,796		4.01
$4.10 – 4.10		3,291,100		9.42		4.10		—		—
$4.23 – 5.38		529,375		7.41		5.05		332,192		5.05
$5.61 – 6.58		529,752		2.08		6.09		529,752		6.09
$6.63 – 6.96		191,772		2.74		6.87		191,772		6.87
$7.06 – 7.06		4,800		2.75		7.06		4,800		7.06
$7.70 – 7.70		2,333		2.83		7.70		2,333		7.70
$8.01 – 8.01		2,250		2.00		8.01		2,250		8.01
$8.89 – 8.89		6,000		1.83		8.89		6,000		8.89
Total Outstanding		5,219,987		7.97	$	4.50		1,382,510	$	5.50

Restricted Stock

The following table summarizes the activity of RSUs, PSUs and MSUs (in thousands, except fair value per share):

Unvested Restricted Stock	Restricted Stock Units			Performance Stock Units			Market Stock Units			Total Number of Shares Underlying Stock Awards			Weighted Average Grant Date Fair Value Per Share
Unvested at June 30, 2016		4,204			—			1,162			5,366			6.48
Granted		1,622			10			708			2,340			5.03
Vested		(1,534	)		—			(176	)		(1,710	)		4.99
Cancelled/Forfeited		(408	)		—			(361	)		(769	)		5.86
Unvested at June 30, 2017		3,884			10			1,333			5,227			5.75
Granted		1,529			53			654			2,236			4.40
Vested		(1,167	)		—			—			(1,167	)		6.24
Cancelled/Forfeited		(546	)		—			(590	)		(1,136	)		5.87
Unvested at June 30, 2018		3,700			63			1,397			5,160			5.03
Granted		1,386			—			—			1,386			3.68
Vested		(1,481	)		(10	)		—			(1,491	)		5.44
Cancelled/Forfeited		(521	)		(53	)		(756	)		(1,330	)		5.10
Unvested at June 30, 2019		3,084			—			641			3,725		$	4.34

As of June 30, 2019, there was approximately $10.1 million of unrecognized compensation cost, net of estimated forfeitures, related to restricted stock, which is expected to be recognized over a weighted average period of 1.65 years.

Restricted Stock Units

The Company recognized $7.2 million, $7.8 million and $9.5 million of share‑based compensation expense, net of estimated forfeitures, related to RSUs during the years ended June 30, 2019, 2018 and 2017. The weighted average grant date fair value per share of RSUs was $3.68, $4.57 and $5.03 for the years ended June 30, 2019, 2018 and 2017, respectively. The aggregate fair market value of RSUs that vested during the year ended June 30, 2019 was $6.2 million.

Performance Stock Units

The Compensation Committee approved the grant of zero, 53,000 and 10,000 PSUs to select employees of the Company in the years ended June 30, 2019, 2018 and 2017, respectively. Of these PSUs, 10,000, zero and zero vested in the years ended June 30, 2019, 2018 and 2017, respectively, due to the achievement of the requisite performance targets while 53,000 were cancelled in the year ended June 30, 2019. No PSUs were cancelled in the years ended June 30, 2018 and 2017.

The Company recognized a benefit of $0.1 million and expense of $0.1 million, and zero, of share‑based compensation expense, net of estimated forfeitures, related to PSUs during the years ended June 30, 2019, 2018, and 2017, respectively.

Market Stock Units

The Compensation Committee approved the performance equity program, referred to as the market stock unit program, or MSU program, in October 2012. The Company’s MSU Program uses the Russell 2000 index as a performance benchmark and requires that the Company’s total stockholder return match or exceed that of the Russell 2000. Based on a sliding scale of how much the Company’s total stockholder return outperforms the Russell 2000 benchmark, the participating executives can earn up to a maximum of 150% of the target number of shares over two measurement periods. The Company uses a Monte‑Carlo simulation to calculate the fair value of the award on the grant date. The Compensation Committee approved the grant of zero, 0.6 million and 0.7 million MSUs to select employees of the Company in the years ended June 30, 2019, 2018 and 2017, respectively. Of these MSUs, zero, zero and 0.2 million vested in the years ending June 30, 2019, 2018 and 2017, respectively, due to the Company’s total stockholder return performance against the Russell 2000 index while 0.8 million, 0.6 million and 0.4 million MSUs were cancelled in the years ended June 30, 2019, 2018 and 2017, respectively.

The Company recognized $1.0 million, $2.6 million and $2.5 million of share‑based compensation expense, net of estimated forfeitures, related to MSUs during the years ended June 30, 2019, 2018 and 2017, respectively. There were no MSUs granted during the year ended June 30, 2019. The weighted average grant date fair value per share of MSUs was $4.11, and $5.20 for the years ended June 30, 2018 and 2017, respectively. As of June 30, 2019, there was approximately $1.0 million of unrecognized compensation cost, net of estimated forfeitures, related to MSUs.

Employee Stock Purchase Plan

Under the Company’s Amended and Restated 2007 Employee Stock Purchase Plan, or ESPP, qualified employees are permitted to purchase the Company’s common stock at 85% of the lower of the fair market value of the common stock on the commencement date of each offering period or the fair market value on the specified purchase date. The ESPP is deemed compensatory and compensation costs are accounted for under ASC 718, Stock Compensation. Employees’ payroll deductions may not exceed 10% of their salaries. Employees may purchase up to 2,500 shares per period provided that the value of the shares purchased in any calendar year may not exceed $25,000, as calculated pursuant to the purchase plan.

The Company estimates the fair value of ESPP shares at the date of grant using the Black‑Scholes option pricing model. The weighted average assumptions were as follows:

	Years Ended June 30,
	2019	2018	2017
Risk–free interest rate	2.11% - 2.72%	1.07% –2.28%	0.49% – 0.70%
Dividend yield	—%	—%	—%
Expected term	0.5 - 1.0	0.5 – 1.0	0.5 – 1.0
Expected volatility	30.9% - 60.0%	31.3% – 51.1%	24.6% – 42.0%

The risk‑free rate for the expected term of the ESPP option was based on the U.S. Treasury Constant Maturity rate for each offering period; expected volatility was based on the historical volatility of the Company’s common stock; and the expected term was based upon the offering period of the ESPP. For the years ended June 30, 2019, 2018 and 2017, the Company recognized $1.1 million, $1.2 million and $1.2 million, respectively, of compensation expense related to its ESPP.

The Company issued 0.9 million and 0.9 million shares under the ESPP in fiscal 2019 and 2018, respectively, at a weighted average price per share of $3.31 and $3.62, respectively. As of June 30, 2019, total unrecognized compensation cost related to the ESPP plan was $0.6 million, which the Company expects to recognize over a weighted average period of 0.8 years.

Income Taxes

12 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 13. Income Taxes

Loss before provision for income taxes on the accompanying statements of operations and comprehensive loss included the following components (in thousands):

	Years Ended June 30,
	2019			2018			2017
Domestic	$	(23,799	)	$	(30,747	)	$	(35,227	)
Foreign		9,455			7,726			6,686
Total worldwide	$	(14,344	)	$	(23,021	)	$	(28,541	)

The provision for income taxes consisted of the following (in thousands):

	Years Ended June 30,
	2019			2018		2017
Current:
Federal	$	—		$	—	$	—
State		32			63		14
Foreign		2,140			785		1,292
Total current	$	2,172		$	848	$	1,306
Deferred:
Federal		—			—		—
State		—			—		—
Foreign		(86	)		30		(268	)
Total deferred		(86	)		30		(268	)
Total provision for income taxes	$	2,086		$	878	$	1,038

Income tax payable was $1.6 million, $1.1 million and $1.2 million at June 30, 2019, 2018 and 2017, respectively. A reconciliation of income taxes at the statutory federal income tax rate to the provision for income taxes included in the accompanying consolidated statements of operations and comprehensive loss is as follows (in thousands):

	Years Ended June 30,
	2019			2018			2017
U.S. federal taxes (benefit):
At federal statutory rate	$	(3,012	)	$	(6,446	)	$	(9,988	)
State tax, net of federal benefit		32			63			14
Share-based compensation expense		1,128			1,712			802
Debt extinguishment		—			967			—
Other non-deductible permanent items		486			702			771
R&D credits		(877	)		(142	)		(359	)
Foreign taxes		(38	)		(1,295	)		(1,355	)
Other		58			(228	)		83
Transition Tax		—			3,348			—
Tax Cuts and Jobs Act		—			54,072			—
Global Intangible Low-Taxed Income		1,924			—			—
Change in valuation allowance		2,385			(51,875	)		11,070
Total	$	2,086		$	878		$	1,038

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s net deferred tax assets were as follows (in thousands):

	June 30,
	2019			2018
Deferred tax assets:
Federal and state net operating losses	$	77,228		$	77,870
Accrued expenses and reserves		7,497			6,290
Deferred revenue		2,897			2,985
R&D Credits		22,108			20,857
Share-based compensation expense		1,327			2,233
Capitalized research and development		3,343			3,988
Unicap		1,953			1,571
Fixed assets/intangibles		1,323			1,486
Section 163(j) interest		1,857			—
Other		1,582			1,650
Total deferred tax assets		121,115			118,930
Deferred tax liabilities:
Contract acquisition costs		(1,146	)		—
Section 481 adjustment		—			(239	)
Total deferred tax liabilities		(1,146	)		(239	)
Valuation allowance		(119,125	)		(117,674	)
Net deferred tax assets	$	844		$	1,017

As of June 30, 2019, the Company had approximately $330.9 million and $131.6 million in federal and state net operating loss carryforwards, respectively. The federal and state carryforwards expire in varying amounts beginning in 2025 for federal and 2020 for state purposes. As of July 1, 2017, the Company adopted ASU 2016-09 and as a result recognized a stock compensation excess windfall that was converted into net operating losses deferred tax which did not materially affect the deferred tax balance.

In addition, as of June 30, 2019, the Company had federal and state research and development tax credits of approximately $20.6 million and $20.1 million, respectively. If not utilized, the federal research credits will begin to expire in 2020, the California research credits have no expiration date, and the other state research credits will begin to expire in 2020.

Under the Internal Revenue Code (“IRC”) Sections 382 and 383, annual use of our net operating loss and research tax credit carryforwards to offset taxable income may be limited based on cumulative changes in ownership. Although ownership changes have occurred in the past, the carryovers should be available for utilization by the Company before they expire, provided the Company generates sufficient future taxable income. There were no equity financings in the current fiscal year that would result in an ownership change under Section 382. The Company will continue to monitor the changes in equity that would affect the tax attributes as reported.

Based on the available objective evidence and history of losses, the Company has established a 100% valuation allowance against the combined domestic net deferred tax assets of Accuray and TomoTherapy because of uncertainty surrounding the realization of such deferred tax assets.

In December 2017, the Tax Cuts and Jobs Act of 2017 (Tax Act) was signed into law which significantly amends the Internal Revenue Code of 1986, among other things reduces the corporate tax rate from a top marginal rate of 35% to a flat rate of 21%, imposes a one-time tax on offshore earnings at reduced rates regardless of whether they are repatriated, limits the tax deduction for interest expense to 30% of adjusted tax earnings, eliminates net operating loss carrybacks, and allows for federal net operating losses (“NOL”) to be carried over indefinitely for NOL generated after December 31, 2017.

As permitted by the U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118 ("SAB 118"), the Company has completed its accounting analysis based on the guidance, interpretations, and data available as of June, 30, 2019. The Company has finalized its assessment of the transitional impacts of the Tax Act, which did not impact its tax expense for the fiscal year ended June 30, 2019. Any future legislative changes, as well as any other new or proposed Treasury regulations, which have yet to be issued, will continue to be assessed and evaluated.

The Tax Act has a requirement that certain income earned by controlled foreign corporations (“CFCs”) must be included currently in the gross income of the CFC’s U.S. shareholder. The income required to be included in gross income is referred to as global intangible low tax income (“GILTI”) and is defined under IRC Section 951A as the excess of the shareholder’s net CFC tested income over the net deemed tangible income return. The GILTI inclusion amount has been absorbed by net operating losses. The Company has made a policy decision to record GILTI tax as a current-period expense when incurred.

The Tax Act also enacted the Base Erosion and Anti-Abuse Tax (“BEAT”). The BEAT minimum tax under IRC Section 59A is applicable to the extent that the BEAT tax amount is greater than the regular corporate tax for a given year. This tax is applicable to companies with prior 3-year average annual gross receipts exceeding $500 million. The Company does not currently meet this threshold since its current average annual gross receipts is less than $500 million.

The Company continues to permanently re-invest its $39.7 million undistributed earnings of its foreign subsidiaries outside the U.S. Future repatriation of the Company's foreign earnings are subject to income taxes.

The aggregate changes in the balance of gross unrecognized tax benefits were as follows (in thousands):

	Years Ended June 30,
	2019			2018			2017
Balance at beginning of year	$	15,299		$	15,819		$	16,643
Tax positions related to current year:
Additions		934			823			1,190
Tax positions related to prior years:
Additions		580			—			299
Reductions		(533	)		(1,343	)		(2,313	)
Balance at end of year	$	16,280		$	15,299		$	15,819

The calculation of unrecognized tax benefits involves dealing with uncertainties in the application of complex global tax regulations. Management regularly assesses the Company’s tax positions with respect to legislative, bilateral tax treaty, regulatory and judicial developments in the countries in which the Company does business. The reduction in prior year’s tax positions primarily relates to lapses of applicable statutes of limitations. The Company anticipates that except for $0.01 million in uncertain tax positions that may be reduced related to the lapse of various statutes of limitation, there will be no material changes in uncertain tax positions in the next 12 months. As of June 30, 2019, the amount of gross unrecognized tax benefits was $16.3 million of which $14.4 million would not affect income tax expense before consideration of any valuation allowance.

The Company’s practice is to recognize interest and/or penalties related to income tax matters in income tax expense. As of June 30, 2019 and 2018, the Company had approximately $0.06 million and $0.04 million, respectively, of accrued interest and penalties related to uncertain tax positions.

The Company files income tax returns in the United States federal, various states and foreign jurisdictions. Due to tax attributes being carried forward and utilized during open years, the statute of limitations remains open for the U.S. federal jurisdiction and domestic states for tax years from 1999 and forward. The statutes of limitation with respect to the foreign jurisdictions where the Company files income tax returns vary from jurisdiction to jurisdiction and range from 3 to 10 years, and the material foreign jurisdictions are France, Switzerland, and Japan.

The Company is also subject to examination of its income tax returns by the Internal Revenue Service (IRS) and other tax authorities, and in some cases the Company has received additional tax assessments which have not been significant. During fiscal year 2017, the Company received tax assessments from the Swiss Vaud Canton tax administration for the 2013, 2015 and 2016 tax periods. The Swiss total assessment of $0.1 million was settled in 2017. In fiscal 2018, the Company was audited by the French tax authorities for the fiscal periods 2015, 2016 and 2017 with no material assessment.

Employee Benefit Plan

12 Months Ended

Jun. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Employee Benefit Plan

Note 14. Employee Benefit Plan

The Company’s employee savings and retirement plan is qualified under Section 401(k) of the United States Internal Revenue Code. Employees may make voluntary, tax‑deferred contributions to the 401(k) Plan up to the statutorily prescribed annual limit. The Company makes discretionary matching contributions to the 401(k) Plan on behalf of employees up to the limit determined by the Board of Directors. The Company contributed $2.1 million, $2.2 million and $2.0 million to the 401(k) Plan during the years ended June 30, 2019, 2018 and 2017, respectively.

Defined Benefit Pension Obligation

12 Months Ended

Jun. 30, 2019

Defined Benefit Pension Obligation Disclosure [Abstract]

Defined Benefit Pension Obligation

Note 15. Defined Benefit Pension Obligation

The Company has established a defined pension plan for its employees in its Switzerland subsidiary. The plan provides benefits to employees upon retirement, death or disability. The Company uses June 30 as the year‑end measurement date for this plan. The unfunded liability of $3.3 million was recognized in long‑term other liabilities in the accompanying balance sheet as of June 30, 2019. Actuarial loss of $0.7 million was recognized in other comprehensive loss in fiscal 2019.

Obligations and Funded Status

The following table presents the funded status of the defined benefit pension plan (in thousands):

	June 30,
	2019			2018
Change in benefit obligation:
Benefit obligation—beginning of fiscal year	$	14,254		$	13,979
Service cost		1,865			1,887
Interest cost		128			97
Plan participants’ contributions		1,818			1,878
Plan amendment		—			(108	)
Actuarial (gain)/loss		742			(935	)
Foreign currency changes		250			(470	)
Benefit and expense payments		(1,480	)		(2,074	)
Benefit obligation—end of fiscal year	$	17,577		$	14,254
Change in plan assets:
Plan assets—beginning of fiscal year	$	12,192		$	11,293
Employer contributions		1,373			1,347
Actual return on plan assets		122			141
Plan participants’ contributions		1,818			1,878
Foreign currency changes		203			(393	)
Benefit and expense payments		(1,480	)		(2,074	)
Plan assets—end of fiscal year	$	14,228		$	12,192
Funded status	$	(3,349	)	$	(2,062	)
Amounts recognized within the consolidated balance sheets:
Assets	$	—		$	—
Long-term other liabilities		(3,349	)		(2,062	)
Net amount recognized	$	(3,349	)	$	(2,062	)

The following table presents the amounts recognized in accumulated other comprehensive loss (before tax) for the defined benefit pension plan (in thousands):

	June 30,
	2019			2018
Net loss	$	(144	)	$	(1,117	)
Prior service cost		(856	)		973
Accumulated other comprehensive loss	$	(1,000	)	$	(144	)

The following table presents the projected benefit obligation, accumulated benefit obligation and fair value of plan assets for this defined benefit pension plan where accumulated benefit obligation exceeded the fair value of plan assets (in thousands):

	June 30,
	2019		2018
Projected benefit obligation	$	17,577	$	14,254
Accumulated benefit obligation	$	15,506	$	12,143
Fair value of plan assets	$	14,228	$	12,192

Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Loss

The following table shows the components of the Company’s net periodic benefit costs and the other amounts recognized in other comprehensive loss, before tax, related to the Company’s defined benefit pension plan (in thousands):

	Year ended June 30,
	2019			2018			2017
Net Periodic Benefit Costs:
Service cost	$	1,865		$	1,887		$	1,996
Interest cost		128			97			49
Expected returns on assets		(170	)		(156	)		(132	)
Amortization of prior service cost		(55	)		(44	)		(46	)
Amortization of net loss		—			11			114
Net periodic benefit costs		1,768			1,795			1,981
Other Amounts Recognized in Other Comprehensive Loss:
Net (gain) loss arising during the year		801			(901	)		(881	)
Prior service cost		—			(105	)		46
Amortization of prior service cost		55			44			—
Amortization of net gain		—			(11	)		(114	)
Total recognized in other comprehensive gain (loss)		856			(973	)		(949	)
Total recognized in net periodic benefit costs and other comprehensive loss	$	2,624		$	822		$	1,032

The amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during fiscal year 2020 related to the Company’s defined benefit pension plan are as follows (in thousands):

	2020
Net loss	$	1,496
Prior service credit		(436	)
Accumulated other comprehensive loss	$	1,060

Assumptions

The assumptions used to determine net periodic benefit cost and to compute the expected long‑term return on assets for the Company’s defined benefit pension plan were as follows:

	Fiscal Years
	2019			2018			2017
Net Periodic Benefit Costs:
Discount rate		0.45	%		0.90	%		0.70	%
Rate of compensation increase		1.50	%		1.50	%		2.00	%
Expected long-term return on assets		1.20	%		1.40	%		1.40	%

The assumptions used to measure the benefit obligation for the Company’s defined benefit pension plan were as follows:

	June 30,
	2019			2018
Benefit Obligation:
Discount rate		0.45	%		0.90	%
Rate of compensation increase		1.50	%		1.50	%

Estimated Contributions and Future Benefit Payments

The Company made contributions of approximately $1.4 million, $1.3 million and $1.3 million to the defined benefit pension plan during fiscal years 2019, 2018 and 2017 respectively. The Company expects total contributions to the defined benefit pension plan for fiscal year 2020 will be approximately $1.5 million.

Estimated future benefit payments to the defined benefit pension plan at June 30, 2019 were as follows (in thousands):

Year Ending June 30,	Future Benefits
2020	$	1,164
2021		1,080
2022		1,017
2023		970
2024		1,443
Thereafter		4,633
Total	$	10,307

Plan Assets

The plan assets are invested in insurance contracts with Swiss Life Foundation BVG (BVG) insurance company based in Zurich, Switzerland at the end of fiscal year 2019 and 2018 and are expected to be invested 100% in insurance contracts in fiscal 2020, which are reinsured by Swiss Life Ltd (SLL). SLL invests the vested pension capital and provides a 100% capital and interest rate guarantee as negotiated by the Company. In 2019, the Company negotiated a guaranteed interest rate of 1.00% for mandatory retirement savings and 0.25% for supplementary retirement savings. The pension plan is entitled to an annual bonus from the SLL comprising the effective savings, risk and cost results. The technical administration and management of the savings account are guaranteed by the SLL on behalf of BVG. Insurance benefits due are paid directly to the entitled persons by the SLL in the name of and for the account of the collective foundation. The Company has committed itself to pay the annual contributions and costs due under the pension fund regulations.

The contract of affiliation between the Company and BVG can be terminated by either side. In the event of a termination, recipients of retirement and survivors’ benefits would remain with the collective foundation. The Company commits itself to transfer its active insured members and recipients of disability benefits to the new employee benefits institution, thus releasing BVG from all obligations.

Segment Disclosure

12 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Segment Disclosure

Note 16. Segment Disclosure

The Company has one operating and reporting segment (oncology systems group), which develops, manufactures and markets proprietary medical devices used in radiation therapy for the treatment of cancer patients. The Company’s Chief Executive Officer, its Chief Operating Decision Maker, reviews financial information presented on a consolidated basis for purposes of making operating decisions and assessing financial performance. The Company does not assess the performance of its individual product lines on measures of profit or loss, or asset based metrics. Therefore, the information below is presented only for revenues and long‑lived tangible assets by geographic areas.

Revenues attributed to a country or region is based on the shipping addresses of the Company’s customers. The following summarizes revenue by geographic region (in thousands):

	Years ended June 30,
	2019		2018		2017
Americas	$	135,683	$	145,689	$	151,442
Europe, Middle East, India and Africa		149,095		120,032		104,026
Asia Pacific		63,793		72,925		59,278
Japan		70,214		66,251		68,668
Total	$	418,785	$	404,897	$	383,414

Information regarding geographic areas in which the Company has long‑lived tangible assets is as follows (in thousands):

	June 30, 2019		June 30, 2018
Americas	$	13,853	$	19,698
Europe, Middle East, India and Africa		575		569
Asia Pacific (excluding Japan and India)		1,419		1,635
Japan		1,275		1,796
Total	$	17,122	$	23,698

Restructuring Charges

12 Months Ended

Jun. 30, 2019

Restructuring And Related Activities [Abstract]

Restructuring Charges

Note 17. Restructuring Charges

In October 2018, the Company informed affected employees of a cost savings initiative designed to reduce operating costs through the elimination of approximately 5 percent of its global workforce. These restructuring charges of $1.5 million were recorded in cost of goods sold and operating expenses in the consolidated statements of operations, of which $1.0 million was paid during fiscal 2019 and $0.5 million is accrued in the consolidated balance sheet as of June 30, 2019.

The Company incurred no restructuring charges for the years ended June 30, 2018 and 2017.

Quarterly Financial Data (unaudited)

12 Months Ended

Jun. 30, 2019

Quarterly Financial Data [Abstract]

Quarterly Financial Data (unaudited)

Note 18. Quarterly Financial Data (unaudited)

The following table provides the selected quarterly financial data for fiscal 2019 and 2018 (in thousands, except net income (loss) per share amounts:

	Quarters ended
	September 30, 2018			December 31, 2018			March 31, 2019			June 30, 2019
Net revenue	$	95,829		$	102,318		$	103,221		$	117,417
Gross profit	$	37,879		$	38,380		$	40,466		$	45,926
Net loss	$	(9,206	)	$	(4,640	)	$	(1,184	)	$	(1,400	)
Net loss per share—basic and diluted	$	(0.11	)	$	(0.05	)	$	(0.01	)	$	(0.02	)
Shares used in basic and diluted per share calculation		86,479			87,237			87,962			88,202

	Quarters ended
	September 30, 2017			December 31, 2017			March 31, 2018			June 30, 2018
Net revenue	$	90,950		$	100,329		$	99,832		$	113,786
Gross profit	$	38,106		$	39,355		$	36,249		$	47,985
Net income (loss)	$	(9,382	)	$	(4,719	)	$	(8,852	)	$	(946	)
Net loss per share—basic and diluted	$	(0.11	)	$	(0.06	)	$	(0.10	)	$	(0.01	)
Shares used in basic and diluted per share calculation		83,747			84,586			85,459			85,677

The Company and its Significant Accounting Policies (Policies)

12 Months Ended

Jun. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Basis of Presentation and Principles of Consolidation

Use of Estimates

Foreign Currency

Fair Value Measurements

Cash and Cash Equivalents

Investments

Concentration of Credit Risk and Other Risks and Uncertainties

Restricted Cash

Inventories

Revenue Recognition

Deferred Revenue and Deferred Cost of Revenue

Customers Advances

Customer Advances

Customer advances represent payments made by customers in advance of product shipment. In general, customer advances are required for a contract to be recognized in our backlog.

Property and Equipment

Software Capitalization Costs

Impairment of Long-Lived Assets

Impairment of Long‑Lived Assets

Goodwill and Purchased Intangible Assets

Shipping and Handling Costs [Policy Text Block]

Shipping and Handling

Advertising Expenses

Research and Development Costs

Share-Based Compensation

Share‑Based Compensation

Loss Contingencies

Net Loss Per Common Share

Basic and diluted net loss per share is computed by dividing net loss attributable to stockholders by the weighted average number of common shares outstanding during the year.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share attributable to stockholders follows (in thousands):

	Years Ended June 30,
	2019			2018			2017
Numerator:
Net loss used to compute basic and diluted loss per share	$	(16,430	)	$	(23,899	)	$	(29,579	)
Denominator:
Weighted average shares used to compute basic and diluted loss per share		87,465			84,893			82,495

The following table sets forth all potentially dilutive securities excluded from the computation in the table above because their effect would have been anti‑dilutive (in thousands):

	As of June 30,
	2019		2018		2017
Stock options		5,220		2,684		2,463
RSUs, PSUs and MSUs		3,725		5,159		5,227
3.50% Convertible Notes		—		—		8,378
		8,945		7,843		16,068

Outstanding Convertible Notes—Diluted Share Impact

Income Taxes

Accumulated Other Comprehensive Loss

Recent Accounting Pronouncements (Policies)	12 Months Ended
Recent Accounting Pronouncements (Policies)	Jun. 30, 2019
Accounting Pronouncement Recently Adopted
Accounting Pronouncements	Accounting Pronouncement Recently Adopted In June 2018, the Financial Accounting Standard Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2018-7, Compensation – Stock Compensation (Topic 718) — Improvements to Nonemployee Share-Based Payment Accounting. This guidance supersedes ASC 505-50 and expands the scope of ASC 718 to include all share-based payment arrangements related to the acquisition of goods and services from both nonemployees and employees. The amendments should be applied on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption. The guidance permits early adoption and was adopted by the Company in the first quarter of fiscal year 2019. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures. In May 2017, the FASB issued ASU No. 2017-09, Compensation—Stock Compensation (Topic 718)—Scope of Modification Accounting. This guidance redefines which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting for a share-based payment. Modification accounting will not be applied if the following are the same immediately before and after the change: fair value, vesting conditions, and classification. The Company adopted ASU No. 2017-09 as required in the first quarter of fiscal year 2019 on a prospective basis. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures. In March 2017, the FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715)—Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. This guidance revises the presentation of employer-sponsored defined benefit pension and other postretirement plans for the net periodic benefit cost in the statement of operations and requires that the service cost component of net periodic benefit be presented in the same income statement line items as other employee compensation costs for services rendered during the period. The other components of the net benefit costs are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of income from operations. This guidance allows only the service cost component of net periodic benefit costs to be eligible for capitalization. In addition, changes to the presentation of benefit costs were required to be adopted retrospectively, while changes to the capitalization of service costs into inventories were required to be adopted prospectively. The standard permits, as a practical expedient, use of the amounts disclosed in the pension plans footnote for the prior comparative periods as the estimation basis for applying the retrospective presentation requirement. The Company adopted ASU No. 2017-07 as required in the first quarter of fiscal year 2019, and the adoption of this ASU did not have a material impact on the Company’s consolidated financial statements and related disclosures. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which clarifies the presentation and classification of certain cash receipts and cash payments in the statement of cash flows. The amendments in the update provide guidance on eight specific cash flow issues. The amendments to the guidance should be applied using a retrospective transition method for each period presented and, if it is impracticable to apply all of the amendments retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company adopted ASU No. 2016-15 as required in the first quarter of fiscal year 2019. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures. In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance changes accounting for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. In addition, it clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The Company adopted this ASU No. 2016-01 as required in the first quarter of fiscal year 2019 on a required modified retrospective approach. The adoption of this ASU did not have any impact on the Company’s consolidated financial statements and related disclosures. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other Topics (Topic 350)—Simplifying the Test for Goodwill Impairment. This guidance simplifies the measurement of goodwill by eliminating the Step 2 impairment test. The new guidance requires companies to perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. This guidance will be effective for the Company beginning in its first quarter of fiscal 2021. The amendment is required to be adopted prospectively. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted this guidance in the first quarter of fiscal year 2019 and adoption of this ASU did not have any impact on its consolidated financial statements and related disclosures. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), to supersede nearly all existing revenue recognition guidance under GAAP. The core principle of ASU 2014-09 is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing GAAP, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 is required to be adopted, using either of two methods: (i) retrospective to each prior reporting period presented with the option to elect certain practical expedients as defined within ASU 2014-09; or (ii) retrospective with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application and providing certain additional disclosures. The Company adopted the new revenue standards as of July 1, 2018, using the modified retrospective transition method applied to those contracts which were not completed as of that date. The Company completed its assessment of the impact this guidance has on its consolidated financial statements and related disclosures. Based on that assessment, the Company concluded the significant impact areas were recognizing revenue from sales of systems at the time of transfer of control, which is generally upon delivery, the capitalization and amortization of incremental costs of obtaining a contract, primarily related to certain bonuses and sales commissions, change in SSP and the removal of software revenue recognition rules along with the elimination of revenue deferral for cash basis customers. Under the new standards, the Company capitalizes incremental contract acquisition costs, such as certain bonuses and sales commissions, and amortizes such costs over the period which the Company benefits, as estimated by management, which may extend beyond the initial contract term. The Company amortizes capitalized bonuses and sales commissions over a period of five years commencing upon the initial transfer of control of the system to the customer. The pattern of amortization is commensurate with the pattern of transfer of control of the performance obligations to the customer. The Company elected to use the practical expedient in ASC 340-40-25-4 and expense commissions related to service renewals and upgrades with a renewal contract term of one year or less as incurred. The Company recorded a net reduction to opening accumulated deficit of $5.1 million, net of tax, as of July 1, 2018 due to the cumulative impact of adopting ASC 606, with the impact primarily related to the deferral of incremental costs to obtain contracts. Under ASC 606, product revenue for direct sales are accelerated to reflect transfer of control upon delivery while an element of installation is deferred until performed. Prior to the adoption of ASC 606, the Company deferred revenue until installation had occurred. The revenue recognition method for indirect sales and service revenues is unchanged under the new guidance. Refer to Note 3, Revenue, to the Consolidated Financial Statement on this Annual report for the detailed impact of adopting ASC 606.
Accounting Pronouncements Not Yet Effective
Accounting Pronouncements	Accounting Pronouncements Not Yet Effective In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, that allows companies to reclassify from Accumulated Other Comprehensive Income to Retained Earnings stranded tax effects resulting from the enactment of the Tax Cuts and Jobs Act (the "Tax Act"). The guidance will be effective for the Company in its first quarter of fiscal 2020. Early adoption is permitted. The guidance should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act is recognized. The Company has not yet selected a transition method, has not yet determined whether it will elect early adoption and is currently evaluating the impact of the adoption of this standard on its consolidated financial statements and related disclosures. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging. This guidance simplifies the application and administration of hedge accounting. The guidance amends the presentation and disclosure requirements and changes how companies assess effectiveness. The guidance is intended to more closely align hedge accounting with companies' risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The guidance will be effective for the Company in its first quarter of fiscal 2020. Early adoption is permitted. The guidance is required to be adopted on a prospective basis. The Company will not early adopt and does not believe the adoption of this standard will have a material impact on its consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU No. 2016-13 Measurement of Credit Losses on Financial Instruments. ASU No. 2016-13 requires measurement and recognition of expected credit losses for financial assets held. This guidance will be effective for the Company in the first quarter of fiscal 2021 and must be adopted using a modified retrospective approach, with certain exceptions. Early adoption is permitted beginning in the first quarter of fiscal 2020. The Company has not yet decided whether it will early adopt and is currently evaluating the impact of the adoption of this standard on its consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" (ASU 2016-02 or Topic 842), which requires lessees to recognize right-of-use (ROU) assets and lease liabilities arising from operating and financing leases with terms longer than 12 months in the consolidated balance sheets and to disclose key information about leasing arrangements. In July 2018, the FASB issued ASU 2018-11, "Leases (Topic 842): Targeted Improvements (ASU 2016-02 or Topic 842)" allowing an alternative modified transition method. Under this method, the cumulative-effect adjustment to the opening balance of retained earnings is recognized on the date of adoption with comparative prior periods not being restated. The new standard, including subsequent amendments is effective for our interim and annual periods beginning July 1, 2019. The Company will adopt the new guidance in the first quarter of fiscal year 2020 using the alternative modified transition basis, thereby recognizing the cumulative effect of initially applying Topic 842 as an adjustment to opening balance sheet on the adoption date, without revising the balances in comparative periods. The Company plans to elect the package of transitional practical expedients allowing, among other provisions, the Company not to reassess under the new standard its prior conclusions about lease identification, lease classification and initial direct cost, for any existing leases on the adoption date. For the facility and car leases, the Company intends to elect to account for lease and non-lease components as a single lease component. The Company intends to make an accounting policy election not to record leases that, at the lease commencement date, have a lease term of 12 months or less on the balance sheet. The Company has substantially completed its evaluation of the new lease guidance implementation and assessed the effect of the adoption on its consolidated financial statements. In connection with the adoption of the new guidance, the Company expects to recognize ROU asset ranging from $29.6 million to $31.6 million and lease liability ranging from $33.5 million to $35.5 million in its balance sheet as of July 1, 2019, with no impact to its results of operations and cash flows. The difference between the leased assets and lease liabilities represents the net position of existing prepaid rent and deferred rent liabilities balance, resulting from historical straight-lining of operating leases, which will be effectively reclassified upon adoption to reduce the measurement of the leased assets. The Company believes that substantially all of its undiscounted future minimum operating lease commitments based on its current lease portfolio that were not recognized on its consolidated balance sheet as of June 30, 2019 but disclosed in Note 9 to the consolidated financial statements, will be subject to the new standard.

The Company and its Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per common share

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share attributable to stockholders follows (in thousands):

	Years Ended June 30,
	2019			2018			2017
Numerator:
Net loss used to compute basic and diluted loss per share	$	(16,430	)	$	(23,899	)	$	(29,579	)
Denominator:
Weighted average shares used to compute basic and diluted loss per share		87,465			84,893			82,495

Schedule of all potentially dilutive securities excluded from the computation of basic and diluted net income (loss) per common share

The following table sets forth all potentially dilutive securities excluded from the computation in the table above because their effect would have been anti‑dilutive (in thousands):

	As of June 30,
	2019		2018		2017
Stock options		5,220		2,684		2,463
RSUs, PSUs and MSUs		3,725		5,159		5,227
3.50% Convertible Notes		—		—		8,378
		8,945		7,843		16,068

Revenue (Tables)

12 Months Ended

Jun. 30, 2019

Schedule of Net Cumulative-effect Adjustment to Retained Earnings for the Adoption of ASC 606

The beginning net cumulative-effect adjustment to retained earnings for the adoption of ASC 606 is as follows:


	Balance at			Adjustment Due to			Balance as Reported at
(Dollars in thousands)	July 1, 2018			ASC 606			June 30, 2018
Assets:
Account receivable, net	$	66,251		$	257		$	65,994
Deferred cost of revenue - current		677			(464	)		1,141
Prepaid expenses and other current assets		16,239			670			15,569
Other assets		17,416			5,840			11,576
Liabilities and Stockholders' Equity:
Other accrued liabilities		23,059			611			22,448
Deferred revenue - current		75,515			111			75,404
Long-term other liabilities		9,075			467			8,608
Accumulated deficit		(469,171	)		5,114			(474,285	)

Summary of Contract with Customer, Asset and Liability

Changes in the contract assets and contract liabilities are as follows:

	June 30, 2019		July 1, 2018		Change
(Dollars in thousands)	Amount		Amount		$			%
Assets:
Unbilled accounts receivable – current (1)	$	5,260	$	3,218		2,042			63
Interest receivable – current (2)		361		—		361			100
Long-term accounts receivable (3)		4,116		6,833		(2,717	)		(40	)
Interest receivable – non-current (3)		1,255		611		644			105
Liabilities:
Customer advances		20,395		22,896		(2,501	)		(11	)
Deferred revenue – current		78,332		75,515		2,817			4
Deferred revenue – non-current		26,639		20,976		5,663			27

(1)	Included in accounts receivable on consolidated balance sheets

(2)	Included in prepaid expenses and other current assets on consolidated balance sheets

(3)	Included in other assets on consolidated balance sheets

Summary of Changes In Deferred Revenue From Contracts With Customers

Changes in deferred revenue from contracts with customers are as follows:

	Year Ended
(Dollars in thousands)	June 30, 2019
Balance at beginning of period	$	96,491
New billings		427,264
Recognition of deferred revenue from opening balance		(78,614	)
Recognition of new additions		(340,170	)
Balance at end of period	$	104,971

Schedule of Remaining Performance Obligations related to Warranty

The following table represents the Company's remaining performance obligations related to long-term warranty and service as of June 30, 2019 and the estimated revenue expected to be recognized:

	Fiscal years of revenue recognition
(Dollars in thousands)	2020		2021		2022		Thereafter
Long-term warranty and service	$	32,853	$	27,361	$	13,333	$	10,964

ASC 606

Schedule of Net Cumulative-effect Adjustment to Retained Earnings for the Adoption of ASC 606

Select consolidated balance sheets line items, which reflect the adoption of ASC 606 are as follows:

	June 30, 2019
(Dollars in thousands)	As Reported			Adjustments			Balances Without Adoption
Assets:
Account receivable, net	$	111,885		$	6,568		$	105,317
Deferred cost of revenue - current		146			(20,124	)		20,270
Prepaid expenses and other current assets		24,205			3,508			20,697
Other assets		17,373			6,893			10,480
Liabilities and Stockholders' Equity:
Other accrued liabilities		32,742			760			31,982
Deferred revenue - current		78,332			(31,220	)		109,552
Long-term other liabilities		9,646			1,200			8,446
Accumulated deficit		(485,540	)		26,104			(511,644	)

Schedule of Effect of Adoption of ASC 606 on Consolidated Statements of Operations and Comprehensive Loss

Select consolidated statements of operations and comprehensive loss line items for the year ended June 30, 2019, which reflect the adoption of ASC 606 are as follows:

	Year Ended June 30, 2019
(Dollars in thousands)	As Reported			Adjustments			Balances Without Adoption
Net revenue	$	418,785		$	37,861		$	380,924
Cost of goods sold		256,134			19,257			236,877
Other expense, net		14,927			(622	)		15,549
Research and development		56,493			(307	)		56,800
Selling and marketing		55,998			(1,108	)		57,106
General and administrative		49,577			(657	)		50,234
Provision for income taxes		2,086			308			1,778
Net loss		(16,430	)		20,990			(37,420	)
Net loss per share - basic and diluted	$	(0.19	)	$	0.23		$	(0.42	)

Supplemental Financial Information (Tables)

12 Months Ended

Jun. 30, 2019

Supplemental Financial Information Disclosure [Abstract]

Schedule of accounts receivable, net

Accounts receivable, net consisted of the following (in thousands):

	June 30, 2019			June 30, 2018
Accounts receivable	$	107,230		$	63,027
Unbilled fees and services		5,260			3,218
		112,490			66,245
Less: Allowance for doubtful accounts		(605	)		(251	)
Accounts receivable, net	$	111,885		$	65,994

Schedule of financing receivables

A summary of the Company’s financing receivables is presented as follows (in thousands):

June 30, 2019	Lease Receivables		Financed Service Contracts and Other			Total
Gross	$	—	$	13,288		$	13,288
Residual value		—		—			—
Unearned income		—		(1,535	)		(1,535	)
Allowance for credit loss		—		(3,582	)		(3,582	)
Total, net	$	—	$	8,171		$	8,171
Reported as:
Current	$	—	$	3,902		$	3,902
Non-current		—		4,269			4,269
Total, net	$	—	$	8,171		$	8,171

June 30, 2018	Lease Receivables			Financed Service Contracts and Other		Total
Gross	$	1,588		$	8,009	$	9,597
Residual value		—			—		—
Unearned income		(137	)		—		(137	)
Allowance for credit loss		—			—		—
Total, net	$	1,451		$	8,009	$	9,460
Reported as:
Current	$	432		$	2,139	$	2,571
Non-current		1,019			5,870		6,889
Total, net	$	1,451		$	8,009	$	9,460

Schedule of inventories

Inventories consisted of the following (in thousands):

	June 30, 2019		June 30, 2018
Raw materials	$	40,966	$	37,144
Work-in-process		18,152		17,703
Finished goods		61,705		53,693
Inventories	$	120,823	$	108,540

Schedule of property and equipment, net

Property and equipment consisted of the following (in thousands):

	June 30, 2019			June 30, 2018
Furniture and fixtures	$	2,728		$	2,927
Computer and office equipment		11,183			11,315
Software		11,236			11,307
Leasehold improvements		25,741			25,423
Machinery and equipment		45,472			47,065
Construction in progress		1,658			5,629
		98,018			103,666
Less: Accumulated depreciation		(80,896	)		(79,968	)
Property and equipment, net	$	17,122		$	23,698

Schedule of components of accumulated other comprehensive income (loss)

The following table summarizes the changes in accumulated other comprehensive income (loss) by component (in thousands):

	Foreign Currency Items			Unrealized Gains and (Losses) on Available-for- Sale Securities			Change in Defined Pension Benefit Obligation			Total
Balance at June 30, 2017	$	1,154		$	(89	)	$	(1,117	)	$	(52	)
Other comprehensive income		83			89			973			1,145
Balance at June 30, 2018	$	1,237		$	—		$	(144	)	$	1,093
Other comprehensive (loss)		(247	)		—			(856	)		(1,103	)
Balance at June 30, 2019	$	990		$	—		$	(1,000	)	$	(10	)

Schedule of consolidated statement of operations

Other expense, net consisted of the following (in thousands):

	Years Ended June 30,
(in thousands)	2019			2018			2017
Interest expense	$	(15,084	)	$	(14,959	)		(17,302	)
Foreign currency transaction loss		(665	)		(986	)		(1,267	)
Other (expense) income		822			(3,279	)		(149	)
Total other expense, net	$	(14,927	)	$	(19,224	)	$	(18,718	)

Goodwill and Purchased Intangible Assets (Tables)

12 Months Ended

Jun. 30, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of goodwill and changes in the carrying amount of goodwill

Goodwill as of June 30, 2019 and 2018 and changes in the carrying amount of goodwill for the respective periods are as follows (in thousands):

	As of June 30,
	2019			2018
Balance at the beginning of the period	$	57,855		$	57,812
Currency translation		(85	)		43
Balance at the end of the period	$	57,770		$	57,855

Schedule of intangible assets associated with purchased patent license

The Company’s intangible assets associated with purchased patent license are as follows (in thousands):

		As of June 30, 2019							As of June 30, 2018
	Useful Lives	Gross Carrying Amount		Accumulated Amortization			Net Amount		Gross Carrying Amount		Accumulated Amortization			Net Amount
	(in years)
Patent license	7	$	1,000	$	(321	)	$	679	$	1,000	$	(179	)	$	821

Schedule of estimated future amortization expense of purchased intangible assets

The estimated future amortization expense of purchased intangible assets as of June 30, 2019 is as follows (in thousands):

Year Ending June 30,	Amount
2020		143
2021		143
2022		143
2023		143
2024		107
	$	679

Derivative Financial Instruments (Tables)

12 Months Ended

Jun. 30, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Schedule of effect of forward contracts not designated as hedging instruments and foreign currency transactions gains and losses

	Years ended June 30,
	2019			2018			2017
Foreign currency exchange gain (loss) on foreign contracts	$	17		$	(2,461	)	$	(1,322	)
Foreign currency transactions gain (loss)		(682	)		1,475			55

Fair Value Measurements (Tables)

12 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Summary of carrying values and estimated fair values of short-term and long-term debt

The following table summarizes the carrying value and estimated fair value of Credit Facilities and Notes (in thousands):

	June 30, 2019				June 30, 2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
3.75% Convertible Notes	$	72,730	$	84,227	$	69,382	$	86,666
Term Loan Facility		58,849		58,849		38,010		38,010
Revolving Credit Facility		28,265		28,265		23,685		23,685
Total	$	159,844	$	171,341	$	131,077	$	148,361

Commitments and Contingencies (Tables)

12 Months Ended

Jun. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Lease Agreements and Long-term Principal and Interest on Convertible Notes

Year Ending June 30,	Operating Leases		Long-Term Debt (1)
2020	$	8,675	$	9,807
2021		7,352		11,487
2022		7,159		29,086
2023		7,161		109,414
2024		5,118		51,672
Thereafter		2,610		—
Total	$	38,075	$	211,466

(1)

Debt (Tables)

12 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Schedule of carrying values of all Debt

The following table presents the carrying value of all Credit Facilities and 3.75% Convertible Notes (in thousands):

	Revolving Credit Facility		3.75% Convertible Notes			Term Loan Facility			Total
Carrying amount of equity conversion component	$	—	$	14,650		$	—		$	14,650
Principal amount	$	28,265	$	85,000		$	63,031		$	176,296
Unamortized debt costs		—		(2,687	)		(1,231	)		(3,918	)
Unamortized debt discount		—		(9,583	)		(2,951	)		(12,534	)
Net carrying amount	$	28,265	$	72,730		$	58,849		$	159,844

Summary of interest expense on all Credit Facilities and Convertible Notes

A summary of interest expense on the Credit Facilities and Notes is as follows (in thousands):

	Year ended June 30,
	2019		2018		2017
Interest expense related to contractual interest coupon	$	10,185	$	9,953	$	9,465
Interest expense related to amortization of debt discount		3,370		3,377		4,052
Interest expense related to amortization of debt issuance costs		1,529		1,629		3,785
Total	$	15,084	$	14,959	$	17,302

Stock Incentive Plan and Employee Stock Purchase Plan (Tables)

12 Months Ended

Jun. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of share-based compensation charges included in the Company's consolidated statements of operations and comprehensive loss

The following table summarizes the share‑based compensation charges included in the Company’s consolidated statements of operations and comprehensive loss (in thousands):

	Years ended June 30,
	2019		2018		2017
Cost of revenue	$	1,666	$	1,866	$	1,991
Research and development		1,773		2,312		2,490
Selling and marketing		2,081		1,390		2,827
General and administrative		5,081		6,721		6,321
Total	$	10,601	$	12,289	$	13,629

Schedule of assumptions used for determining fair value of stock options

The fair value of each option is estimated at the date of grant using the Black‑Scholes option pricing formula with the following assumptions:

	Years Ended June 30,
	2019			2018			2017
Risk–free interest rate	1.94% - 2.81%				1.98	%		1.76	%
Dividend yield		—	%		—	%		—	%
Expected term	5.31 - 5.51				5.25			5.12
Expected volatility	47.0% - 47.1%				43.9	%		46.4	%

Schedule of option activity under the Company's Incentive Plan

A summary of option activity under the Company’s incentive plan during the fiscal years is presented below (in thousands except per share and term amounts):

	Options Outstanding			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (In Years)		Aggregate Intrinsic Value
Balance at June 30, 2016		2,377			8.00		3.97	$	452
Options granted		760			5.05
Options exercised		(113	)		5.18
Options forfeited/expired		(561	)		13.38
Balance at June 30, 2017		2,463			6.05		5.42	$	191
Options granted		795			4.12
Options exercised		(109	)		4.02
Options forfeited/expired		(465	)		7.76
Balance at June 30, 2018		2,684			5.26		6.16	$	60
Options granted		3,359			4.09
Options exercised		(115	)		4.26
Options forfeited/expired		(708	)		5.51
Balance at June 30, 2019		5,220			4.50		7.97	$	11
Vested or Expected to vest at June 30, 2019		4,427			4.56
Exercisable at June 30, 2019		1,383		$	5.50

Summary of information about outstanding and exercisable options

The following table summarizes information about outstanding and exercisable options at June 30, 2019 (in thousands, except years and exercise price):

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Outstanding		Weighted Average Exercise Price
$3.71 – 4.00		584,809		8.27	$	3.97		235,615	$	4.00
$4.01 – 4.01		77,796		2.27		4.01		77,796		4.01
$4.10 – 4.10		3,291,100		9.42		4.10		—		—
$4.23 – 5.38		529,375		7.41		5.05		332,192		5.05
$5.61 – 6.58		529,752		2.08		6.09		529,752		6.09
$6.63 – 6.96		191,772		2.74		6.87		191,772		6.87
$7.06 – 7.06		4,800		2.75		7.06		4,800		7.06
$7.70 – 7.70		2,333		2.83		7.70		2,333		7.70
$8.01 – 8.01		2,250		2.00		8.01		2,250		8.01
$8.89 – 8.89		6,000		1.83		8.89		6,000		8.89
Total Outstanding		5,219,987		7.97	$	4.50		1,382,510	$	5.50

Summary of activity of RSUs, PSUs and MSUs

The following table summarizes the activity of RSUs, PSUs and MSUs (in thousands, except fair value per share):

Unvested Restricted Stock	Restricted Stock Units			Performance Stock Units			Market Stock Units			Total Number of Shares Underlying Stock Awards			Weighted Average Grant Date Fair Value Per Share
Unvested at June 30, 2016		4,204			—			1,162			5,366			6.48
Granted		1,622			10			708			2,340			5.03
Vested		(1,534	)		—			(176	)		(1,710	)		4.99
Cancelled/Forfeited		(408	)		—			(361	)		(769	)		5.86
Unvested at June 30, 2017		3,884			10			1,333			5,227			5.75
Granted		1,529			53			654			2,236			4.40
Vested		(1,167	)		—			—			(1,167	)		6.24
Cancelled/Forfeited		(546	)		—			(590	)		(1,136	)		5.87
Unvested at June 30, 2018		3,700			63			1,397			5,160			5.03
Granted		1,386			—			—			1,386			3.68
Vested		(1,481	)		(10	)		—			(1,491	)		5.44
Cancelled/Forfeited		(521	)		(53	)		(756	)		(1,330	)		5.10
Unvested at June 30, 2019		3,084			—			641			3,725		$	4.34

Schedule of weighted average assumptions used for determining fair value of ESPP shares

The Company estimates the fair value of ESPP shares at the date of grant using the Black‑Scholes option pricing model. The weighted average assumptions were as follows:

	Years Ended June 30,
	2019	2018	2017
Risk–free interest rate	2.11% - 2.72%	1.07% –2.28%	0.49% – 0.70%
Dividend yield	—%	—%	—%
Expected term	0.5 - 1.0	0.5 – 1.0	0.5 – 1.0
Expected volatility	30.9% - 60.0%	31.3% – 51.1%	24.6% – 42.0%

Income Taxes (Tables)

12 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Schedule of components of loss before provision for income taxes on the accompanying statements of operations and comprehensive loss

Loss before provision for income taxes on the accompanying statements of operations and comprehensive loss included the following components (in thousands):

	Years Ended June 30,
	2019			2018			2017
Domestic	$	(23,799	)	$	(30,747	)	$	(35,227	)
Foreign		9,455			7,726			6,686
Total worldwide	$	(14,344	)	$	(23,021	)	$	(28,541	)

Schedule of provision for income taxes

The provision for income taxes consisted of the following (in thousands):

	Years Ended June 30,
	2019			2018		2017
Current:
Federal	$	—		$	—	$	—
State		32			63		14
Foreign		2,140			785		1,292
Total current	$	2,172		$	848	$	1,306
Deferred:
Federal		—			—		—
State		—			—		—
Foreign		(86	)		30		(268	)
Total deferred		(86	)		30		(268	)
Total provision for income taxes	$	2,086		$	878	$	1,038

Schedule of reconciliation of income taxes at the statutory federal income tax rate to the provision for income taxes included in the accompanying consolidated statements of operations and comprehensive loss

	Years Ended June 30,
	2019			2018			2017
U.S. federal taxes (benefit):
At federal statutory rate	$	(3,012	)	$	(6,446	)	$	(9,988	)
State tax, net of federal benefit		32			63			14
Share-based compensation expense		1,128			1,712			802
Debt extinguishment		—			967			—
Other non-deductible permanent items		486			702			771
R&D credits		(877	)		(142	)		(359	)
Foreign taxes		(38	)		(1,295	)		(1,355	)
Other		58			(228	)		83
Transition Tax		—			3,348			—
Tax Cuts and Jobs Act		—			54,072			—
Global Intangible Low-Taxed Income		1,924			—			—
Change in valuation allowance		2,385			(51,875	)		11,070
Total	$	2,086		$	878		$	1,038

Schedule of significant components of net deferred tax assets

	June 30,
	2019			2018
Deferred tax assets:
Federal and state net operating losses	$	77,228		$	77,870
Accrued expenses and reserves		7,497			6,290
Deferred revenue		2,897			2,985
R&D Credits		22,108			20,857
Share-based compensation expense		1,327			2,233
Capitalized research and development		3,343			3,988
Unicap		1,953			1,571
Fixed assets/intangibles		1,323			1,486
Section 163(j) interest		1,857			—
Other		1,582			1,650
Total deferred tax assets		121,115			118,930
Deferred tax liabilities:
Contract acquisition costs		(1,146	)		—
Section 481 adjustment		—			(239	)
Total deferred tax liabilities		(1,146	)		(239	)
Valuation allowance		(119,125	)		(117,674	)
Net deferred tax assets	$	844		$	1,017

Schedule of aggregate changes in the balance of gross unrecognized tax benefits

The aggregate changes in the balance of gross unrecognized tax benefits were as follows (in thousands):

	Years Ended June 30,
	2019			2018			2017
Balance at beginning of year	$	15,299		$	15,819		$	16,643
Tax positions related to current year:
Additions		934			823			1,190
Tax positions related to prior years:
Additions		580			—			299
Reductions		(533	)		(1,343	)		(2,313	)
Balance at end of year	$	16,280		$	15,299		$	15,819

Defined Benefit Pension Obligation (Tables)

12 Months Ended

Jun. 30, 2019

Defined Benefit Pension Obligation Disclosure [Abstract]

Schedule of funded status

The following table presents the funded status of the defined benefit pension plan (in thousands):

	June 30,
	2019			2018
Change in benefit obligation:
Benefit obligation—beginning of fiscal year	$	14,254		$	13,979
Service cost		1,865			1,887
Interest cost		128			97
Plan participants’ contributions		1,818			1,878
Plan amendment		—			(108	)
Actuarial (gain)/loss		742			(935	)
Foreign currency changes		250			(470	)
Benefit and expense payments		(1,480	)		(2,074	)
Benefit obligation—end of fiscal year	$	17,577		$	14,254
Change in plan assets:
Plan assets—beginning of fiscal year	$	12,192		$	11,293
Employer contributions		1,373			1,347
Actual return on plan assets		122			141
Plan participants’ contributions		1,818			1,878
Foreign currency changes		203			(393	)
Benefit and expense payments		(1,480	)		(2,074	)
Plan assets—end of fiscal year	$	14,228		$	12,192
Funded status	$	(3,349	)	$	(2,062	)
Amounts recognized within the consolidated balance sheets:
Assets	$	—		$	—
Long-term other liabilities		(3,349	)		(2,062	)
Net amount recognized	$	(3,349	)	$	(2,062	)

Schedule of amounts recognized in accumulated other comprehensive loss (before tax)

The following table presents the amounts recognized in accumulated other comprehensive loss (before tax) for the defined benefit pension plan (in thousands):

	June 30,
	2019			2018
Net loss	$	(144	)	$	(1,117	)
Prior service cost		(856	)		973
Accumulated other comprehensive loss	$	(1,000	)	$	(144	)

Schedule of projected benefit obligations, accumulated benefit obligation and fair value of plan assets where accumulated benefit obligation exceeded fair value of plan assets

	June 30,
	2019		2018
Projected benefit obligation	$	17,577	$	14,254
Accumulated benefit obligation	$	15,506	$	12,143
Fair value of plan assets	$	14,228	$	12,192

Schedule Of Net Benefit Costs And Other Amounts Recognized In Other Comprehensive Income Loss Table Text Block

	Year ended June 30,
	2019			2018			2017
Net Periodic Benefit Costs:
Service cost	$	1,865		$	1,887		$	1,996
Interest cost		128			97			49
Expected returns on assets		(170	)		(156	)		(132	)
Amortization of prior service cost		(55	)		(44	)		(46	)
Amortization of net loss		—			11			114
Net periodic benefit costs		1,768			1,795			1,981
Other Amounts Recognized in Other Comprehensive Loss:
Net (gain) loss arising during the year		801			(901	)		(881	)
Prior service cost		—			(105	)		46
Amortization of prior service cost		55			44			—
Amortization of net gain		—			(11	)		(114	)
Total recognized in other comprehensive gain (loss)		856			(973	)		(949	)
Total recognized in net periodic benefit costs and other comprehensive loss	$	2,624		$	822		$	1,032

Schedule of amounts in accumulated other comprehensive loss that are expected to be recognized

	2020
Net loss	$	1,496
Prior service credit		(436	)
Accumulated other comprehensive loss	$	1,060

Schedule of assumptions used to determine net periodic benefit cost and benefit obligation

The assumptions used to determine net periodic benefit cost and to compute the expected long‑term return on assets for the Company’s defined benefit pension plan were as follows:

	Fiscal Years
	2019			2018			2017
Net Periodic Benefit Costs:
Discount rate		0.45	%		0.90	%		0.70	%
Rate of compensation increase		1.50	%		1.50	%		2.00	%
Expected long-term return on assets		1.20	%		1.40	%		1.40	%

The assumptions used to measure the benefit obligation for the Company’s defined benefit pension plan were as follows:

	June 30,
	2019			2018
Benefit Obligation:
Discount rate		0.45	%		0.90	%
Rate of compensation increase		1.50	%		1.50	%

Schedule of estimated future benefit payments

Estimated future benefit payments to the defined benefit pension plan at June 30, 2019 were as follows (in thousands):

Year Ending June 30,	Future Benefits
2020	$	1,164
2021		1,080
2022		1,017
2023		970
2024		1,443
Thereafter		4,633
Total	$	10,307

Segment Disclosure (Tables)

12 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Summary of Revenue by Geographic Region

Revenues attributed to a country or region is based on the shipping addresses of the Company’s customers. The following summarizes revenue by geographic region (in thousands):

	Years ended June 30,
	2019		2018		2017
Americas	$	135,683	$	145,689	$	151,442
Europe, Middle East, India and Africa		149,095		120,032		104,026
Asia Pacific		63,793		72,925		59,278
Japan		70,214		66,251		68,668
Total	$	418,785	$	404,897	$	383,414

Schedule of Geographic Areas in Which the Company has Long Lived Tangible Assets

Information regarding geographic areas in which the Company has long‑lived tangible assets is as follows (in thousands):

	June 30, 2019		June 30, 2018
Americas	$	13,853	$	19,698
Europe, Middle East, India and Africa		575		569
Asia Pacific (excluding Japan and India)		1,419		1,635
Japan		1,275		1,796
Total	$	17,122	$	23,698

Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Jun. 30, 2019

Quarterly Financial Data [Abstract]

Schedule of selected quarterly financial data (unaudited)

The following table provides the selected quarterly financial data for fiscal 2019 and 2018 (in thousands, except net income (loss) per share amounts:

	Quarters ended
	September 30, 2018			December 31, 2018			March 31, 2019			June 30, 2019
Net revenue	$	95,829		$	102,318		$	103,221		$	117,417
Gross profit	$	37,879		$	38,380		$	40,466		$	45,926
Net loss	$	(9,206	)	$	(4,640	)	$	(1,184	)	$	(1,400	)
Net loss per share—basic and diluted	$	(0.11	)	$	(0.05	)	$	(0.01	)	$	(0.02	)
Shares used in basic and diluted per share calculation		86,479			87,237			87,962			88,202

	Quarters ended
	September 30, 2017			December 31, 2017			March 31, 2018			June 30, 2018
Net revenue	$	90,950		$	100,329		$	99,832		$	113,786
Gross profit	$	38,106		$	39,355		$	36,249		$	47,985
Net income (loss)	$	(9,382	)	$	(4,719	)	$	(8,852	)	$	(946	)
Net loss per share—basic and diluted	$	(0.11	)	$	(0.06	)	$	(0.10	)	$	(0.01	)
Shares used in basic and diluted per share calculation		83,747			84,586			85,459			85,677

The Company and its Significant Accounting Policies - Additional Information (Details) shares in Millions	12 Months Ended
	Jun. 30, 2019 USD ($) Item Customer segment shares	Jun. 30, 2018 USD ($) Customer	Jun. 30, 2017 USD ($) Customer	Aug. 31, 2017
Concentration Risk [Line Items]
Description of impact of revision in financial statements	These revisions have no impact on the consolidated balance sheet as of June 30, 2018 and the consolidated statement of operations and comprehensive loss, stockholders’ equity and cash flows for the year then ended.
Maximum expected period to classify deferred revenue as current liabilities and deferred costs of revenue as current assets	1 year
Capitalized development of software costs	$ 0
Number of operating segments \| segment	1
Number of reporting units \| segment	1
Impairment of goodwill	$ 0	$ 0	$ 0
Advertising expenses	500,000	$ 400,000	$ 400,000
Reduction in uncertain tax position due to lapse of various statutes of limitation	$ 10,000
Subsequent period within which no material changes in unrecognized tax benefits are expected	12 months
Stock options
Concentration Risk [Line Items]
Expiration period	10 years
Machinery and equipment
Concentration Risk [Line Items]
Period over which property and equipment are depreciated	5 years
Furniture and fixtures
Concentration Risk [Line Items]
Period over which property and equipment are depreciated	4 years
Computer and office equipment
Concentration Risk [Line Items]
Period over which property and equipment are depreciated	3 years
Computer Software
Concentration Risk [Line Items]
Period over which property and equipment are depreciated	3 years
Maximum
Concentration Risk [Line Items]
Estimated useful lives of purchased intangible assets	7 years
Minimum
Concentration Risk [Line Items]
Estimated useful lives of purchased intangible assets	1 year
Cash, cash equivalent and investments \| Investment concentration risk
Concentration Risk [Line Items]
Number of obligors or makers \| Item	1
Cash, cash equivalent and investments \| Investment concentration risk \| Maximum
Concentration Risk [Line Items]
Percentage of concentration risk	5.00%
Total net revenue \| Customer concentration risk
Concentration Risk [Line Items]
Percentage of concentration risk	10.00%	10.00%	10.00%
Total net revenue \| Customer concentration risk \| Minimum
Concentration Risk [Line Items]
Number of significant customers \| Customer	0	0	0
Total accounts receivable \| Credit concentration risk
Concentration Risk [Line Items]
Number of significant customers \| Customer	1	0
Total accounts receivable \| Credit concentration risk \| Minimum
Concentration Risk [Line Items]
Percentage of concentration risk		10.00%
3.75% Convertible Senior Notes due 2022
Concentration Risk [Line Items]
Interest rate (as a percent)	3.75%	3.75%		3.75%
Common stock not included in the calculation of potentially diluted shares \| shares	14.9
3.75% Convertible Notes
Concentration Risk [Line Items]
Interest rate (as a percent)	3.75%
Convertible debt maturity period	2022-08
3.50% Convertible Senior Notes
Concentration Risk [Line Items]
Interest rate (as a percent)	3.50%
Convertible debt maturity maturity date	Feb. 01, 2018
3.50% Series A Convertible Notes
Concentration Risk [Line Items]
Interest rate (as a percent)	3.50%
Convertible debt maturity maturity date	Feb. 01, 2018
Error Correction in Presentation of Fair Value
Concentration Risk [Line Items]
Increase in unbilled fees and services, error correction		$ 600,000
Error Correction in Presentation of Fair Value \| 3.75% Convertible Senior Notes due 2022
Concentration Risk [Line Items]
Increase in fair value of debt instrument, error correction		$ 15,900,000

The Company and its Significant Accounting Policies - Schedule of reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per common share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net loss used to compute basic and diluted loss per share	$ (1,400)	$ (1,184)	$ (4,640)	$ (9,206)	$ (946)	$ (8,852)	$ (4,719)	$ (9,382)	$ (16,430)	$ (23,899)	$ (29,579)
Weighted average common shares used in computing net loss per share:
Weighted average shares used to compute basic and diluted loss per share	88,202	87,962	87,237	86,479	85,677	85,459	84,586	83,747	87,465	84,893	82,495

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

The Company and its Significant Accounting Policies - Schedule of all potentially dilutive securities excluded from the computation of basic and diluted net income (loss) per common share (Details) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)	8,945	7,843	16,068
Stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)	5,220	2,684	2,463
RSUs, PSUs and MSUs
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)	3,725	5,159	5,227
3.50% Convertible Notes
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted net income (loss) per share (in shares)			8,378

Recent Accounting Pronouncements - Additional Information (Details) - USD ($)	Jul. 01, 2019	Jul. 01, 2018
ASC 606
Estimated net cumulative-effect adjustment to retained earnings		$ 5,100,000
ASU 2016-02 \| Subsequent Event \| Minimum
Operating lease right of use assets	$ 29,600,000
Operating lease liabilities	33,500,000
ASU 2016-02 \| Subsequent Event \| Maximum
Operating lease right of use assets	31,600,000
Operating lease liabilities	$ 35,500,000

Revenue - Schedule of Net Cumulative-effect Adjustment to Retained Earnings for the Adoption of ASC 606 (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2018
ASSETS
Account receivable, net	$ 111,885		$ 65,994
Deferred cost of revenue - current	146		1,141
Prepaid expenses and other current assets	24,205		15,569
Other assets	17,373		11,576
Liabilities and Stockholders' Equity:
Other accrued liabilities	32,742		22,448
Deferred revenue - current	78,332	$ 75,515	75,404
Long-term other liabilities	9,646		8,608
Accumulated deficit	$ (485,540)		$ (474,285)
ASC 606
ASSETS
Account receivable, net		66,251
Deferred cost of revenue - current		677
Prepaid expenses and other current assets		16,239
Other assets		17,416
Liabilities and Stockholders' Equity:
Other accrued liabilities		23,059
Deferred revenue - current		75,515
Long-term other liabilities		9,075
Accumulated deficit		(469,171)
ASC 606 \| Adjustment Due to ASC 606
ASSETS
Account receivable, net		257
Deferred cost of revenue - current		(464)
Prepaid expenses and other current assets		670
Other assets		5,840
Liabilities and Stockholders' Equity:
Other accrued liabilities		611
Deferred revenue - current		111
Long-term other liabilities		467
Accumulated deficit		$ 5,114

Revenue - Schedule of Effect of Adoption of ASC 606 on Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2018
ASSETS
Account receivable, net	$ 111,885		$ 65,994
Deferred cost of revenue - current	146		1,141
Prepaid expenses and other current assets	24,205		15,569
Other assets	17,373		11,576
Liabilities and Stockholders' Equity:
Other accrued liabilities	32,742		22,448
Deferred revenue - current	78,332	$ 75,515	75,404
Long-term other liabilities	9,646		8,608
Accumulated deficit	(485,540)		$ (474,285)
ASC 606
ASSETS
Account receivable, net		66,251
Deferred cost of revenue - current		677
Prepaid expenses and other current assets		16,239
Other assets		17,416
Liabilities and Stockholders' Equity:
Other accrued liabilities		23,059
Deferred revenue - current		75,515
Long-term other liabilities		9,075
Accumulated deficit		$ (469,171)
ASC 606 \| Adjustment Due to ASC 606
ASSETS
Account receivable, net	6,568
Deferred cost of revenue - current	(20,124)
Prepaid expenses and other current assets	3,508
Other assets	6,893
Liabilities and Stockholders' Equity:
Other accrued liabilities	760
Deferred revenue - current	(31,220)
Long-term other liabilities	1,200
Accumulated deficit	26,104
ASC 606 \| Balances Without Adoption
ASSETS
Account receivable, net	105,317
Deferred cost of revenue - current	20,270
Prepaid expenses and other current assets	20,697
Other assets	10,480
Liabilities and Stockholders' Equity:
Other accrued liabilities	31,982
Deferred revenue - current	109,552
Long-term other liabilities	8,446
Accumulated deficit	$ (511,644)

Revenue - Schedule of Effect of Adoption of ASC 606 on Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Net revenue	$ 117,417	$ 103,221	$ 102,318	$ 95,829	$ 113,786	$ 99,832	$ 100,329	$ 90,950	$ 418,785	$ 404,897	$ 383,414
Cost of goods sold									256,134	243,202	242,073
Other expense, net									(14,927)	(19,224)	(18,718)
Research and development									56,493	57,251	49,921
Selling and marketing									55,998	60,105	57,477
General and administrative									49,577	48,136	43,766
Provision for income taxes									2,086	878	1,038
Net loss	$ (1,400)	$ (1,184)	$ (4,640)	$ (9,206)	$ (946)	$ (8,852)	$ (4,719)	$ (9,382)	$ (16,430)	$ (23,899)	$ (29,579)
Net loss per share - basic and diluted	$ (0.02)	$ (0.01)	$ (0.05)	$ (0.11)	$ (0.01)	$ (0.10)	$ (0.06)	$ (0.11)	$ (0.19)	$ (0.28)	$ (0.36)
ASC 606 \| Adjustment Due to ASC 606
Net revenue									$ 37,861
Cost of goods sold									19,257
Other expense, net									622
Research and development									(307)
Selling and marketing									(1,108)
General and administrative									(657)
Provision for income taxes									308
Net loss									$ 20,990
Net loss per share - basic and diluted									$ 0.23
ASC 606 \| Balances Without Adoption
Net revenue									$ 380,924
Cost of goods sold									236,877
Other expense, net									(15,549)
Research and development									56,800
Selling and marketing									57,106
General and administrative									50,234
Provision for income taxes									1,778
Net loss									$ (37,420)
Net loss per share - basic and diluted									$ (0.42)

Revenue -Summary of Contract with Customer, Asset and Liability (Details) - USD ($)
$ in Thousands

12 Months Ended

Jun. 30, 2019

Jul. 01, 2018

Jun. 30, 2018

ASSETS

Unbilled accounts receivable – current

$ 5,260

^[1]

$ 3,218

^[1]

$ 3,218

Interest receivable – current

^[2]

361

Long-term accounts receivable

^[3]

4,116

6,833

Interest receivable – non-current

^[3]

1,255

611

Change in unbilled accounts receivable - current

^[1]

2,042

Changes in Interest receivable – current

^[2]

361

Change in long term accounts receivable

^[3]

(2,717)

Change in Interest receivable - non-current

^[3]

$ 644

Percentage change in unbilled accounts receivable - current

^[1]

63.00%

Percentage change in Interest receivable – current

^[2]

100.00%

Percentage change in long term accounts receivable

^[3]

(40.00%)

Percentage change in interest receivable - non-current

^[3]

105.00%

Liabilities:

Customer advances

$ 20,395

22,896

Deferred revenue - current

78,332

75,515

75,404

Deferred revenue – non-current

26,639

$ 20,976

Change in customer advances

(2,501)

Change in unbilled deferred revenue - current

2,817

Change in unbilled deferred revenue - non-current

$ 5,663

Percentage change in customer advances

(11.00%)

Percentage change in unbilled deferred revenue - current

4.00%

Percentage change in unbilled deferred revenue - non-current

27.00%

[1]	Included in accounts receivable on consolidated balance sheets
[2]	Included in prepaid expenses and other current assets on consolidated balance sheets
[3]	Included in other assets on consolidated balance sheets

Revenue - Summary of Revenue from Contract with Customer (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2019 USD ($)
Revenue From Contract With Customer [Abstract]
Balance at beginning of period	$ 96,491
New billings	427,264
Recognition of deferred revenue from opening balance	(78,614)
Recognition of new additions	(340,170)
Balance at end of period	$ 104,971

Revenue - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	$ 863.8
Capitalized costs to obtain a contract	8.4	$ 5.9
Impairment loss	0.5
Capitalized contract cost, amortization	2.2
Long-term warranty and service
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	84.5
Performance Obligations Other Than Warrant
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	$ 779.3
Minimum
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Percentage of changes in operating results on entity's revenue	17.00%
Maximum
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Percentage of changes in operating results on entity's revenue	27.00%

Revenue - Schedule of Remaining Performance Obligations related to Warranty (Details) - Long-term warranty and service $ in Thousands	Jun. 30, 2019 USD ($)
2020	$ 32,853
2021	27,361
2022	13,333
Thereafter	$ 10,964

Revenue - Additional Information (Details1)	Jun. 30, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations recognized period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations recognized period	30 months
Minimum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations percentage	22.00%
Minimum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations percentage	69.00%
Maximum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations percentage	31.00%
Maximum \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations percentage	78.00%

Supplemental Financial Information - Schedule of accounts receivable, net (Details) - USD ($)
$ in Thousands

Jun. 30, 2019

Jul. 01, 2018

^[1]

Jun. 30, 2018

Accounts receivable, net

Accounts receivable

$ 107,230

$ 63,027

Unbilled fees and services

5,260

^[1]

$ 3,218

3,218

Accounts and other receivable, gross

112,490

66,245

Less: Allowance for doubtful accounts

(605)

(251)

Accounts receivable, net

$ 111,885

$ 65,994

[1]	Included in accounts receivable on consolidated balance sheets

Supplemental Financial Information - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Accounts receivable, net
Allowance for doubtful accounts, payments and credits	$ 200,000	$ 200,000
Allowance for doubtful accounts, additions	600,000	100,000
Allowance for doubtful accounts, write-offs		100,000
Financing receivables
Accounts receivable with contractual maturities and sales-type leases	4,269,000	6,889,000
Sales-type leases		1,000,000
Accounts receivable with contractual maturities of more than one year		5,900,000
Allowance for credit loss	3,582,000
Future minimum lease payments receivable	0
Property and equipment, net
Depreciation expense	$ 8,100,000	9,600,000	$ 10,300,000
Maximum
Financing receivables
Allowance for credit loss		$ 100,000

Supplemental Financial Information - Summary of Financing Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Financing receivables
Gross	$ 13,288	$ 9,597
Unearned income	(1,535)	(137)
Allowance for credit loss	(3,582)
Total, net	8,171	9,460
Current	3,902	2,571
Non-current	4,269	6,889
Lease Receivables
Financing receivables
Gross		1,588
Unearned income		(137)
Total, net		1,451
Current		432
Non-current		1,019
Financed Service Contracts and Other
Financing receivables
Gross	13,288	8,009
Unearned income	(1,535)
Allowance for credit loss	(3,582)
Total, net	8,171	8,009
Current	3,902	2,139
Non-current	$ 4,269	$ 5,870

Supplemental Financial Information - Summary of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Inventory Net [Abstract]
Raw materials	$ 40,966	$ 37,144
Work-in-process	18,152	17,703
Finished goods	61,705	53,693
Inventories	$ 120,823	$ 108,540

Supplemental Financial Information - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Property and equipment, net
Property and equipment, gross	$ 98,018	$ 103,666
Less: Accumulated depreciation	(80,896)	(79,968)
Property and equipment, net	17,122	23,698
Furniture and Fixtures
Property and equipment, net
Property and equipment, gross	2,728	2,927
Computer and Office Equipment
Property and equipment, net
Property and equipment, gross	11,183	11,315
Software
Property and equipment, net
Property and equipment, gross	11,236	11,307
Leasehold Improvements
Property and equipment, net
Property and equipment, gross	25,741	25,423
Machinery and Equipment
Property and equipment, net
Property and equipment, gross	45,472	47,065
Construction in Progress
Property and equipment, net
Property and equipment, gross	$ 1,658	$ 5,629

Supplemental Financial Information - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss)
Balance	$ 48,632	$ 46,533
Balance	49,871	48,632
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss)
Balance	1,237	1,154
Other comprehensive income (loss)	(247)	83
Balance	990	1,237
Unrealized Gains and (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss)
Balance		(89)
Other comprehensive income (loss)		89
Change in Defined Pension Benefit Obligation
Accumulated Other Comprehensive Income (Loss)
Balance	(144)	(1,117)
Other comprehensive income (loss)	(856)	973
Balance	(1,000)	(144)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Balance	1,093	(52)
Other comprehensive income (loss)	(1,103)	1,145
Balance	$ (10)	$ 1,093

Supplemental Financial Information - Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Supplemental Financial Information Disclosure [Abstract]
Interest expense	$ (15,084)	$ (14,959)	$ (17,302)
Foreign currency transaction loss	(665)	(986)	(1,267)
Other (expense) income	822	(3,279)	(149)
Total other expense, net	$ (14,927)	$ (19,224)	$ (18,718)

Goodwill and Purchased Intangible Assets - Schedule of Goodwill and Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 57,855	$ 57,812
Currency translation	(85)	43
Balance at the end of the period	$ 57,770	$ 57,855

Goodwill and Purchased Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Finite Lived Intangible Assets [Line Items]
Impairment of goodwill	$ 0	$ 0	$ 0
Amortization expense	$ 100,000	$ 100,000	$ 7,700,000
Patent license
Finite Lived Intangible Assets [Line Items]
Useful Lives	7 years		7 years

Goodwill and Purchased Intangible Assets - Schedule of Intangible Assets Associated with Purchased Patent License (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2017	Jun. 30, 2018
Finite Lived Intangible Assets [Line Items]
Net Amount	$ 679		$ 821
Patent license
Finite Lived Intangible Assets [Line Items]
Useful Lives	7 years	7 years
Gross Carrying Amount	$ 1,000		1,000
Accumulated Amortization	(321)		(179)
Net Amount	$ 679		$ 821

Goodwill and Purchased Intangible Assets - Schedule of Estimated Future Amortization Expense of Purchased Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Estimated future amortization expense of purchased intangible assets
2020	$ 143
2021	143
2022	143
2023	143
2024	107
Net Amount	$ 679	$ 821

Investments - Additional Information (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($) position	Oct. 31, 2017 shares
Cash, cash equivalents and short-term investments
Proceeds from sale of available-for-sale securities, debt	$ 23,900
Loss on sales of investments			$ 171
Available-for-sale Securities		$ 0	$ 0
Number of positions held in an unrealized loss position \| position			0
Technology Company \| Common Stock
Cash, cash equivalents and short-term investments
Investment owned, shares \| shares				143,000
Proceeds from sale of available-for-sale securities, equity			$ 400
Loss on sales of investments			$ 100
Other expense, net
Cash, cash equivalents and short-term investments
Available for sale securities, reclassified from other comprehensive income to other expense, net		$ 77

Derivative Financial Instruments - Additional Information (Details) - contract	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Outstanding foreign currency contracts (number of contracts)	0	0
Maximum
Length of forward contracts	3 months

Derivative Financial Instruments - Schedule of Effect of Forward Contracts Not Designated as Hedging Instruments and Foreign Currency Transactions Gains and Losses (Details) - Other expense, net - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Foreign currency exchange gain (loss) on foreign contracts	$ (682)	$ 1,475	$ 55
Foreign contracts
Foreign currency exchange gain (loss) on foreign contracts	$ 17	$ (2,461)	$ (1,322)

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018	Aug. 31, 2017
Financial assets
Cash and cash equivalents	$ 76,798	$ 83,083
3.75% Convertible Senior Notes due 2022
Financial assets
Interest rate (as a percent)	3.75%	3.75%	3.75%

Fair Value Measurements - Summary of Carrying Value and Estimated Fair Value of all Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Carrying Value
Fair value measurement
Long term debt	$ 159,844	$ 131,077
Fair Value
Fair value measurement
Long term debt	171,341	148,361
Non-recurring basis \| Carrying Value \| Level 2 \| 3.75% Convertible Notes
Fair value measurement
Long term debt	72,730	69,382
Non-recurring basis \| Fair Value \| Level 2 \| 3.75% Convertible Notes
Fair value measurement
Long term debt	84,227	86,666
Term loan \| Non-recurring basis \| Carrying Value \| Level 2
Fair value measurement
Long term debt	58,849	38,010
Term loan \| Non-recurring basis \| Fair Value \| Level 2
Fair value measurement
Long term debt	58,849	38,010
Revolving Credit Facility \| Non-recurring basis \| Carrying Value \| Level 2
Fair value measurement
Long term debt	28,265	23,685
Revolving Credit Facility \| Non-recurring basis \| Fair Value \| Level 2
Fair value measurement
Long term debt	$ 28,265	$ 23,685

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jan. 31, 2019
Loss Contingencies [Line Items]
Rent expense	$ 8.3	$ 9.2	$ 8.6
License agreement \| WARF (Wisconsin Alumni Research Foundation)
Loss Contingencies [Line Items]
Royalty costs	0.6	0.5	$ 0.5
Royalty amount accrued	0.2	$ 0.2
License agreement \| WARF (Wisconsin Alumni Research Foundation) \| Minimum
Loss Contingencies [Line Items]
Annual commitment amount	$ 0.3
Accuray Asia
Loss Contingencies [Line Items]
Percentage of ownership interest in joint venture				49.00%
Existing 3.75% Convertible Notes
Loss Contingencies [Line Items]
Interest rate (as a percent)	3.75%

Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Lease Agreements and Long-term Principal and Interest on Convertible Notes (Details)
$ in Thousands

Jun. 30, 2019

USD ($)

Future minimum lease payments under non-cancelable operating lease agreements

$ 8,675

7,352

7,159

7,161

5,118

2,610

38,075

Long-term principal and interest on Convertible Notes

2020

9,807

^[1]

2021

11,487

^[1]

2022

29,086

^[1]

2023

109,414

^[1]

2024

51,672

^[1]

Total

$ 211,466

^[1]

[1]

Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Lease Agreements and Long-term Principal and Interest on Convertible Notes (Parenthetical) (Details)	Jun. 30, 2019	Jun. 30, 2018	Aug. 31, 2017
3.75% Convertible Senior Notes due 2022
Debt
Interest rate (as a percent)	3.75%	3.75%	3.75%

Debt - Additional Information (Details)					1 Months Ended						12 Months Ended
Debt - Additional Information (Details)	Feb. 07, 2018 shares	Feb. 01, 2018 USD ($) shares	Jan. 30, 2018 USD ($)	Jun. 14, 2017 USD ($)	May 31, 2019 USD ($)	Apr. 30, 2019	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Apr. 30, 2014 USD ($) $ / shares	Feb. 28, 2013 USD ($) $ / shares	Jun. 30, 2019 USD ($) $ / shares	Jun. 30, 2018 USD ($)	Aug. 31, 2017 USD ($)
Debt
Common stock value											$ 89,000	$ 86,000
Principal amount of the Notes											176,296,000
Unamortized debt costs											3,918,000
Debt discount costs											12,534,000
Revolving Credit Facility
Debt
Principal amount of the Notes											28,265,000
Initial borrowing capacity				$ 52,000,000
Minimum drawn balance (as a percent)				30.00%
Outstanding revolving credit facility											28,300,000
Revolving Credit Facility \| Other Assets
Debt
Unamortized debt costs											$ 1,100,000
90-day LIBOR \| Revolving Credit Facility
Debt
Interest rate determination basis											90-day LIBOR
Variable rate (as a percent)				4.50%	3.50%	4.50%
Repurchase
Debt
Repurchase/Retirement of existing notes													$ 28,000,000
Revolving Credit Agreement \| Revolving Credit Facility
Debt
Reduced borrowing capacity								$ 32,000,000
Term Loan Facility due December 2022
Debt
Principal amount of the Notes											$ 63,031,000
Unamortized debt costs											1,231,000
Debt discount costs											$ 2,951,000
Term Loan Facility due December 2022 \| Term loan
Debt
Initial term loan borrowing capacity								40,000,000
Additional term loan borrowing capacity								$ 20,000,000
Loan prepayment fees for first year (percentage)								3.00%
Loan prepayment fees for second year (percentage)								2.00%
Loan prepayment fees for third year (percentage)								1.00%
Term of loan (in months)								60 months
Term of interest payable (in months)								24 months
Administrative fee payable on term loan as a percentage								0.25%
Final payment of administrative fee payable on term loan as a percentage								4.00%
Debt instrument amount withdrawn							$ 5,000,000
Debt instrument scheduled commitment extended termination date							Jun. 30, 2019
Debt instrument remaining unfunded commitment amount							$ 15,000,000
Term Loan Facility due December 2022 \| 90-day LIBOR \| Term loan
Debt
Interest rate determination basis											90-day LIBOR
Variable rate (as a percent)								6.75%
Term Loan Facility Due May 2024 \| Term loan
Debt
Principal amount of the Notes											$ 63,000,000
Debt instrument increased commitment amount					$ 500,000
Debt discount costs					$ 1,500,000
Term Loan Facility Due May 2024 \| 90-day LIBOR \| Term loan
Debt
Interest rate determination basis											90-day LIBOR
Variable rate (as a percent)					5.50%	6.75%
3.50% Convertible Notes
Debt
Interest rate (as a percent)										3.50%
Conversion rate, number of shares to be issued per $1000 of principal amount (in shares)										187.6877
Principal amount used for debt instrument conversion ratio										$ 1,000
Conversion price (in dollars per share) \| $ / shares										$ 5.33
Repayment of convertible debt and accrued interest		$ 13,200,000	$ 13,000,000
Common stock value			300,000
Period of volume weighted averaging price which is used to determine total number of shares	3 days
3.50% Convertible Notes \| Common Stock
Debt
Common stock shares issued to note holders \| shares	253,000
3.50% Convertible Notes \| Other expense, net
Debt
Extinguishment of debt			$ 300,000
3.50% Series A Convertible Senior Notes
Debt
Interest rate (as a percent)									3.50%
Conversion rate, number of shares to be issued per $1000 of principal amount (in shares)									187.6877
Principal amount used for debt instrument conversion ratio									$ 1,000
Conversion price (in dollars per share) \| $ / shares									$ 5.33
Repayment of convertible debt and accrued interest		$ 27,000,000
3.50% Series A Convertible Senior Notes \| Common Stock
Debt
Common stock shares issued to settle Convertible Notes \| shares		1,252
3.75% Convertible Senior Notes due 2022
Debt
Interest rate (as a percent)											3.75%	3.75%	3.75%
Conversion rate, number of shares to be issued per $1000 of principal amount (in shares)											174.8252
Principal amount used for debt instrument conversion ratio											$ 1,000
Conversion price (in dollars per share) \| $ / shares											$ 5.72
Aggregate principal amount of debt issued													$ 85,000,000
Repurchase price, as a percentage of the principal amount, in the event of a fundamental change, as defined in Indenture											100.00%
Principal amount of the Notes											$ 85,000,000
Unamortized debt costs											2,687,000
Debt discount costs											$ 9,583,000
3.75% Convertible Senior Notes due 2022 \| Exchange
Debt
Aggregate principal amount of debt issued													53,000,000
3.75% Convertible Senior Notes due 2022 \| Repurchase
Debt
Aggregate principal amount of debt issued													32,000,000
3.50% Convertible Notes due 2018 and 3.5% Series A Senior Notes due February 2018 \| Exchange
Debt
Aggregate principal amount of debt issued													$ 47,000,000

Debt - Schedule of Carrying Values of All Debt (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Debt
Carrying amount of equity conversion component	$ 14,650
Principal amount	176,296
Unamortized debt costs	(3,918)
Unamortized debt discount	(12,534)
Net carrying amount	159,844
Revolving Credit Facility
Debt
Principal amount	28,265
Net carrying amount	28,265
3.75% Convertible Senior Notes due 2022
Debt
Carrying amount of equity conversion component	14,650
Principal amount	85,000
Unamortized debt costs	(2,687)
Unamortized debt discount	(9,583)
Net carrying amount	72,730
Term Loan Facility due December 2022
Debt
Principal amount	63,031
Unamortized debt costs	(1,231)
Unamortized debt discount	(2,951)
Net carrying amount	$ 58,849

Debt - Summary of interest expense on all Credit Facilities and Convertible Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Debt Disclosure [Abstract]
Interest expense related to contractual interest coupon	$ 10,185	$ 9,953	$ 9,465
Interest expense related to amortization of debt discount	3,370	3,377	4,052
Interest expense related to amortization of debt issuance costs	1,529	1,629	3,785
Total	$ 15,084	$ 14,959	$ 17,302

Shareholders' Equity - Additional Information (Details) shares in Millions	Jun. 30, 2019 shares
Stockholders Equity Note [Abstract]
Number of shares of common stock reserved for issuance under stock incentive plans and employee stock purchase plan	8.9

Stock Incentive Plan and Employee Stock Purchase Plan - Additional Information (Details)	12 Months Ended
	Jun. 30, 2019 USD ($) Item Plan $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 28, 2019 $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock incentive plans \| Plan	3
Fair value of common stock (in dollars per share) \| $ / shares				$ 3.87
Share-based compensation expense	$ 10,601,000	$ 12,289,000	$ 13,629,000
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense	$ 1,100,000	$ 1,200,000	1,200,000
Weighted average period for recognition of compensation costs	9 months 18 days
Unrecognized compensation cost	$ 600,000
Purchase price expressed as percentage of fair market value of common stock	85.00%
Shares issued under the ESPP \| shares	900,000	900,000
Weighted average fair value (in dollars per share) \| $ / shares	$ 3.31	$ 3.62
Maximum \| ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payroll deductions as percentage of salaries	10.00%
Number of shares per period up to which employees may purchase \| shares	2,500
Value of shares up to which employees may purchase in any calendar year	$ 25,000
Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total intrinsic value of options exercised	100,000	$ 100,000	100,000
Share-based compensation expense	1,400,000	600,000	500,000
Realized excess tax benefits related to stock options exercises	0	0	0
Unrecognized compensation cost related to unvested stock options, net of estimated forfeitures	$ 6,700,000
Weighted average period for recognition of compensation costs	3 years 3 months
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense	$ 7,200,000	$ 7,800,000	$ 9,500,000
Weighted average period for recognition of compensation costs	1 year 7 months 24 days
Unrecognized compensation cost	$ 10,100,000
Weighted average grant date fair value (in dollars per share) \| $ / shares	$ 3.68	$ 4.57	$ 5.03
Aggregate fair market value of units vested	$ 6,200,000
Granted (in shares) \| shares	1,386,000	1,529,000	1,622,000
Vested (in shares) \| shares	1,481,000	1,167,000	1,534,000
Cancelled/Forfeited (in shares) \| shares	521,000	546,000	408,000
Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in shares) \| shares	0	53,000	10,000
Vested (in shares) \| shares	10,000	0	0
Cancelled (in shares) \| shares	53,000	0	0
Share-based compensation expense (benefit)	$ (100,000)	$ 100,000	$ 0
Cancelled/Forfeited (in shares) \| shares	53,000
Market Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense	$ 1,000,000	$ 2,600,000	$ 2,500,000
Unrecognized compensation cost	$ 1,000,000
Weighted average grant date fair value (in dollars per share) \| $ / shares		$ 4.11	$ 5.20
Granted (in shares) \| shares	0	654,000	708,000
Vested (in shares) \| shares	0	0	176,000
Cancelled/Forfeited (in shares) \| shares	756,000	590,000	361,000
2007 Amended and Restated Plan \| Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Contractual term	10 years
Percentage of the award vesting at first anniversary	25.00%
Vesting period for first 25% vesting rights	1 year
Remainder vesting period	36 months
2007 Amended and Restated Plan \| Stock options \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price of stock options as a percentage of fair market value on the grant date	100.00%
2007 Amended and Restated Plan \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the award vesting at first anniversary	50.00%
Percentage of the award vesting at second anniversary	50.00%
2007 Amended and Restated Plan \| Time-based RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual vesting percentage	25.00%
MSU Program \| Market Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense	$ 0	$ 600,000	$ 700,000
Number of measurement periods \| Item	2
MSU Program \| Market Stock Units \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target number of shares that participating executives may earn (as a percent)	150.00%

Stock Incentive Plan and Employee Stock Purchase Plan - Summary of Share-based Compensation Charges Included in the Company's Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Share-based compensation expenses
Share-based compensation expense	$ 10,601	$ 12,289	$ 13,629
Cost of revenue
Share-based compensation expenses
Share-based compensation expense	1,666	1,866	1,991
Research and development
Share-based compensation expenses
Share-based compensation expense	1,773	2,312	2,490
Selling and marketing
Share-based compensation expenses
Share-based compensation expense	2,081	1,390	2,827
General and administrative
Share-based compensation expenses
Share-based compensation expense	$ 5,081	$ 6,721	$ 6,321

Stock Incentive Plan and Employee Stock Purchase Plan - Schedule of Assumptions Used for Determining Fair Value of Stock Options (Details) - Stock options	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Weighted average assumptions used for determining fair value of options
Risk-free interest rate (as a percent)		1.98%	1.76%
Risk-free interest rate, Minimum (as a percent)	1.94%
Risk-free interest rate, Maximum (as a percent)	2.81%
Expected term (in years)		5 years 3 months	5 years 1 month 13 days
Expected volatility (as a percent)		43.90%	46.40%
Expected volatility, Minimum (as a percent)	47.00%
Expected volatility, Maximum (as a percent)	47.10%
Minimum
Weighted average assumptions used for determining fair value of options
Expected term (in years)	5 years 3 months 21 days
Maximum
Weighted average assumptions used for determining fair value of options
Expected term (in years)	5 years 6 months 3 days

Stock Incentive Plan and Employee Stock Purchase Plan - Schedule of Option Activity Under the Company's Incentive Plan (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Options Outstanding
Balance at the beginning of the year (in shares)	2,684	2,463	2,377
Options granted (in shares)	3,359	795	760
Options exercised (in shares)	(115)	(109)	(113)
Options forfeited/expired (in shares)	(708)	(465)	(561)
Balance at the end of the year (in shares)	5,220	2,684	2,463	2,377
Vested or Expected to vest at the end of the year (in shares)	4,427
Exercisable at the end of the year (in shares)	1,383
Weighted Average Exercise Price
Balance at the beginning of the year (in dollars per share)	$ 5.26	$ 6.05	$ 8.00
Options granted (in dollars per share)	4.09	4.12	5.05
Options exercised (in dollars per share)	4.26	4.02	5.18
Options forfeited/expired (in dollars per share)	5.51	7.76	13.38
Balance at the end of the year (in dollars per share)	4.50	$ 5.26	$ 6.05	$ 8.00
Vested or Expected to vest at the end of the year (in dollars per share)	4.56
Exercisable at the end of the year (in dollars per share)	$ 5.50
Weighted Average Remaining Contractual Life (In Years)
Balance	7 years 11 months 19 days	6 years 1 month 28 days	5 years 5 months 1 day	3 years 11 months 19 days
Aggregate Intrinsic Value (in thousands)
Balance at the beginning of the year	$ 11	$ 60	$ 191	$ 452

Stock Incentive Plan and Employee Stock Purchase Plan - Summary of Information about Outstanding and Exercisable Options (Details) - Stock options shares in Thousands	12 Months Ended
	Jun. 30, 2019 $ / shares shares
Options Outstanding
Number Outstanding \| shares	5,219,987
Weighted-Average Remaining Contractual Life (Years)	7 years 11 months 19 days
Weighted-Average Exercise Price (in dollars per share)	$ 4.50
Options Exercisable
Number Outstanding \| shares	1,382,510
Weighted-Average Exercise Price (in dollars per share)	$ 5.50
$3.71 – 4.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	3.71
Exercise price, high end of range (in dollars per share)	$ 4.00
Options Outstanding
Number Outstanding \| shares	584,809
Weighted-Average Remaining Contractual Life (Years)	8 years 3 months 7 days
Weighted-Average Exercise Price (in dollars per share)	$ 3.97
Options Exercisable
Number Outstanding \| shares	235,615
Weighted-Average Exercise Price (in dollars per share)	$ 4.00
$4.01 – 4.01
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	4.01
Exercise price, high end of range (in dollars per share)	$ 4.01
Options Outstanding
Number Outstanding \| shares	77,796
Weighted-Average Remaining Contractual Life (Years)	2 years 3 months 7 days
Weighted-Average Exercise Price (in dollars per share)	$ 4.01
Options Exercisable
Number Outstanding \| shares	77,796
Weighted-Average Exercise Price (in dollars per share)	$ 4.01
$4.10 – 4.10
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	4.10
Exercise price, high end of range (in dollars per share)	$ 4.10
Options Outstanding
Number Outstanding \| shares	3,291,100
Weighted-Average Remaining Contractual Life (Years)	9 years 5 months 1 day
Weighted-Average Exercise Price (in dollars per share)	$ 4.10
$4.23 – 5.38
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	4.23
Exercise price, high end of range (in dollars per share)	$ 5.38
Options Outstanding
Number Outstanding \| shares	529,375
Weighted-Average Remaining Contractual Life (Years)	7 years 4 months 28 days
Weighted-Average Exercise Price (in dollars per share)	$ 5.05
Options Exercisable
Number Outstanding \| shares	332,192
Weighted-Average Exercise Price (in dollars per share)	$ 5.05
$5.61 – 6.58
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	5.61
Exercise price, high end of range (in dollars per share)	$ 6.58
Options Outstanding
Number Outstanding \| shares	529,752
Weighted-Average Remaining Contractual Life (Years)	2 years 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 6.09
Options Exercisable
Number Outstanding \| shares	529,752
Weighted-Average Exercise Price (in dollars per share)	$ 6.09
$6.63 – 6.96
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	6.63
Exercise price, high end of range (in dollars per share)	$ 6.96
Options Outstanding
Number Outstanding \| shares	191,772
Weighted-Average Remaining Contractual Life (Years)	2 years 8 months 26 days
Weighted-Average Exercise Price (in dollars per share)	$ 6.87
Options Exercisable
Number Outstanding \| shares	191,772
Weighted-Average Exercise Price (in dollars per share)	$ 6.87
$7.06 – 7.06
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	7.06
Exercise price, high end of range (in dollars per share)	$ 7.06
Options Outstanding
Number Outstanding \| shares	4,800
Weighted-Average Remaining Contractual Life (Years)	2 years 9 months
Weighted-Average Exercise Price (in dollars per share)	$ 7.06
Options Exercisable
Number Outstanding \| shares	4,800
Weighted-Average Exercise Price (in dollars per share)	$ 7.06
$7.70 – 7.70
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	7.70
Exercise price, high end of range (in dollars per share)	$ 7.70
Options Outstanding
Number Outstanding \| shares	2,333
Weighted-Average Remaining Contractual Life (Years)	2 years 9 months 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 7.70
Options Exercisable
Number Outstanding \| shares	2,333
Weighted-Average Exercise Price (in dollars per share)	$ 7.70
$8.01 – 8.01
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	8.01
Exercise price, high end of range (in dollars per share)	$ 8.01
Options Outstanding
Number Outstanding \| shares	2,250
Weighted-Average Remaining Contractual Life (Years)	2 years
Weighted-Average Exercise Price (in dollars per share)	$ 8.01
Options Exercisable
Number Outstanding \| shares	2,250
Weighted-Average Exercise Price (in dollars per share)	$ 8.01
$8.89 – 8.89
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of range (in dollars per share)	8.89
Exercise price, high end of range (in dollars per share)	$ 8.89
Options Outstanding
Number Outstanding \| shares	6,000
Weighted-Average Remaining Contractual Life (Years)	1 year 9 months 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 8.89
Options Exercisable
Number Outstanding \| shares	6,000
Weighted-Average Exercise Price (in dollars per share)	$ 8.89

Stock Incentive Plan and Employee Stock Purchase Plan - Summary of Activity of RSUs, PSUs and MSUs (Details) - $ / shares	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Restricted Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)	3,700,000	3,884,000	4,204,000
Granted (in shares)	1,386,000	1,529,000	1,622,000
Vested (in shares)	(1,481,000)	(1,167,000)	(1,534,000)
Cancelled/Forfeited (in shares)	(521,000)	(546,000)	(408,000)
Unvested at the end of the year (in shares)	3,084,000	3,700,000	3,884,000
Weighted Average Grant Date Fair Value Per Share
Granted (in dollars per share)	$ 3.68	$ 4.57	$ 5.03
Performance Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)	63,000	10,000
Granted (in shares)	0	53,000	10,000
Vested (in shares)	(10,000)	0	0
Cancelled/Forfeited (in shares)	(53,000)
Unvested at the end of the year (in shares)		63,000	10,000
Market Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)	1,397,000	1,333,000	1,162,000
Granted (in shares)	0	654,000	708,000
Vested (in shares)	0	0	(176,000)
Cancelled/Forfeited (in shares)	(756,000)	(590,000)	(361,000)
Unvested at the end of the year (in shares)	641,000	1,397,000	1,333,000
Weighted Average Grant Date Fair Value Per Share
Granted (in dollars per share)		$ 4.11	$ 5.20
Restricted Stock Units, Performance Stock Units and Market Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)	5,160,000	5,227,000	5,366,000
Granted (in shares)	1,386,000	2,236,000	2,340,000
Vested (in shares)	(1,491,000)	(1,167,000)	(1,710,000)
Cancelled/Forfeited (in shares)	(1,330,000)	(1,136,000)	(769,000)
Unvested at the end of the year (in shares)	3,725,000	5,160,000	5,227,000
Weighted Average Grant Date Fair Value Per Share
Unvested at the beginning of the year (in dollars per share)	$ 5.03	$ 5.75	$ 6.48
Granted (in dollars per share)	3.68	4.40	5.03
Vested (in dollars per share)	5.44	6.24	4.99
Cancelled/Forfeited (in dollars per share)	5.10	5.87	5.86
Unvested at the end of the year (in dollars per share)	$ 4.34	$ 5.03	$ 5.75

Stock Incentive Plan and Employee Stock Purchase Plan - ESPP (Details) - ESPP	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Weighted average assumptions used for determining fair value of options
Risk-free interest rate, Minimum (as a percent)	2.11%	1.07%	0.49%
Risk-free interest rate, Maximum (as a percent)	2.72%	2.28%	0.70%
Expected volatility, Minimum (as a percent)	30.90%	31.30%	24.60%
Expected volatility, Maximum (as a percent)	60.00%	51.10%	42.00%
Minimum
Weighted average assumptions used for determining fair value of options
Expected term (in years)	6 months	6 months	6 months
Maximum
Weighted average assumptions used for determining fair value of options
Expected term (in years)	1 year	1 year	1 year

Income Taxes - Schedule of Components of Loss Before Provision for Income Taxes on the Accompanying Statements of Operations and Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Components of loss before provision for income taxes
Domestic	$ (23,799)	$ (30,747)	$ (35,227)
Foreign	9,455	7,726	6,686
Loss before provision for income taxes	$ (14,344)	$ (23,021)	$ (28,541)

Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Current:
State	$ 32	$ 63	$ 14
Foreign	2,140	785	1,292
Total current	2,172	848	1,306
Deferred:
Foreign	(86)	30	(268)
Total deferred	(86)	30	(268)
Total provision for income taxes	$ 2,086	$ 878	$ 1,038

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2017	Jun. 30, 2019	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2016
Income Taxes [Line Items]
Income tax payable		$ 1,600	$ 1,200	$ 1,100
Valuation allowance percentage established for domestic and foreign net deferred tax assets		100.00%
Tax deduction for interest expense		30.00%
Undistributed earnings of foreign subsidiaries		$ 39,700
Reduction in uncertain tax position due to lapse of various statutes of limitation		$ 10
Subsequent period within which no material changes in unrecognized tax benefits are expected		12 months
Gross unrecognized tax benefits		$ 16,280	15,819	15,299	$ 16,643
Uncertain tax benefits that, if realized, would affect the effective tax rate		14,400
Accrued interest and penalties related to uncertain tax positions		60		$ 40
Swiss total assessment settlement			$ 100
Minimum
Income Taxes [Line Items]
Average annual prior gross receipts treshhold amount for exemption from base erosion and anti abuse tax		$ 500,000
Statutes of limitations with respect to jurisdictions (in years)		3 years
Maximum
Income Taxes [Line Items]
Statutes of limitations with respect to jurisdictions (in years)		10 years
Marginal Rate
Income Taxes [Line Items]
Effective income tax rate	35.00%
Flat Rate
Income Taxes [Line Items]
Effective income tax rate		21.00%
Federal
Income Taxes [Line Items]
Net operating loss carryforwards		$ 330,900
Federal \| Research and development
Income Taxes [Line Items]
Tax credits		20,600
State
Income Taxes [Line Items]
Net operating loss carryforwards		131,600
State \| Research and development
Income Taxes [Line Items]
Tax credits		$ 20,100

Income Taxes - Schedule of Reconciliation of Income Taxes at the Statutory Federal Income Tax Rate to the Provision for Income Taxes Included in the Accompanying Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
U.S. federal taxes (benefit):
At federal statutory rate	$ (3,012)	$ (6,446)	$ (9,988)
State tax, net of federal benefit	32	63	14
Share-based compensation expense	1,128	1,712	802
Debt extinguishment		967
Other non-deductible permanent items	486	702	771
R&D credits	(877)	(142)	(359)
Foreign taxes	(38)	(1,295)	(1,355)
Other	58	(228)	83
Transition Tax		3,348
Tax Cuts and Jobs Act		54,072
Global Intangible Low-Taxed Income	1,924
Change in valuation allowance	2,385	(51,875)	11,070
Total provision for income taxes	$ 2,086	$ 878	$ 1,038

Income Taxes - Schedule of Significant Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Deferred tax assets:
Federal and state net operating losses	$ 77,228	$ 77,870
Accrued expenses and reserves	7,497	6,290
Deferred revenue	2,897	2,985
R&D Credits	22,108	20,857
Share-based compensation expense	1,327	2,233
Capitalized research and development	3,343	3,988
Unicap	1,953	1,571
Fixed assets/intangibles	1,323	1,486
Section 163(j) interest	1,857
Other	1,582	1,650
Total deferred tax assets	121,115	118,930
Deferred tax liabilities:
Contract acquisition costs	(1,146)
Section 481 adjustment		(239)
Total deferred tax liabilities	(1,146)	(239)
Valuation allowance	(119,125)	(117,674)
Net deferred tax assets	$ 844	$ 1,017

Income Taxes - Schedule of Aggregate Changes in the Balance of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Aggregate changes in the balance of gross unrecognized tax benefits
Balance at beginning of year	$ 15,299	$ 15,819	$ 16,643
Tax positions related to current year: Additions	934	823	1,190
Tax positions related to prior years: Additions	580		299
Tax positions related to prior years: Reductions	(533)	(1,343)	(2,313)
Balance at end of year	$ 16,280	$ 15,299	$ 15,819

Employee Benefit Plan - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Employer's contribution to the 401(k) Plan	$ 2.1	$ 2.2	$ 2.0

Defined Benefit Pension Obligation - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Pension Obligation
Actuarial loss	$ 700
Defined benefit pension plan
Defined Benefit Pension Obligation
Actuarial loss	742	$ (935)
Employer contributions	1,373	$ 1,347	$ 1,300
Expected total contributions to defined benefit pension plan for fiscal year 2020	$ 1,500
Defined benefit pension plan \| BVG
Plan Assets
Plan assets expected investment percentage	100.00%
Required capital percentage	100.00%
Guaranteed interest rate for mandatory retirement savings (as a percent)	1.00%
Guaranteed interest rate for supplementary retirement savings (as a percent)	0.25%
Long-term other liabilities
Defined Benefit Pension Obligation
Unfunded liability	$ 3,300

Defined Benefit Pension Obligation - Obligations and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Change in benefit obligation:
Actuarial (gain)/loss	$ 700
Amounts recognized within the consolidated balance sheets:
Assets	438,181	$ 378,727
Defined benefit pension plan
Change in benefit obligation:
Benefit obligation—beginning of fiscal year	14,254	13,979
Service cost	1,865	1,887	$ 1,996
Interest cost	128	97	49
Plan participants’ contributions	1,818	1,878
Plan amendment		(108)
Actuarial (gain)/loss	742	(935)
Foreign currency changes	250	(470)
Benefit and expense payments	(1,480)	(2,074)
Benefit obligation—end of fiscal year	17,577	14,254	13,979
Change in plan assets:
Plan assets—beginning of fiscal year	12,192	11,293
Employer contributions	1,373	1,347	1,300
Actual return on plan assets	122	141
Plan participants’ contributions	1,818	1,878
Foreign currency changes	203	(393)
Benefit and expense payments	(1,480)	(2,074)
Plan assets—end of fiscal year	14,228	12,192	$ 11,293
Funded status	(3,349)	(2,062)
Amounts recognized within the consolidated balance sheets:
Long-term other liabilities	3,349	2,062
Net amount recognized	$ 3,349	$ 2,062

Defined Benefit Pension Obligation - Amounts Recognized (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Amounts recognized within the consolidated balance sheets:
Assets	$ 438,181	$ 378,727
Defined benefit pension plan
Amounts recognized within the consolidated balance sheets:
Long-term other liabilities	(3,349)	(2,062)
Net amount recognized	(3,349)	(2,062)
Amounts recognized in accumulated other comprehensive loss (before tax)
Net loss	(144)	(1,117)
Prior service cost	(856)	973
Accumulated other comprehensive loss	(1,000)	(144)
Accumulated benefit obligations in excess of fair value of plan assets:
Projected benefit obligation	17,577	14,254
Accumulated benefit obligation	15,506	12,143
Fair value of plan assets	$ 14,228	$ 12,192

Defined Benefit Pension Obligation - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Loss (Details) - Defined benefit pension plan - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Net Periodic Benefit Costs:
Service cost	$ 1,865	$ 1,887	$ 1,996
Interest cost	128	97	49
Expected returns on assets	(170)	(156)	(132)
Amortization of prior service cost	(55)	(44)	(46)
Amortization of net loss		11	114
Net periodic benefit costs	1,768	1,795	1,981
Other Amounts Recognized in Other Comprehensive Loss:
Net (gain) loss arising during the year	801	(901)	(881)
Prior service cost		(105)	46
Amortization of prior service cost	55	44
Amortization of net gain		(11)	(114)
Total recognized in other comprehensive gain (loss)	856	(973)	(949)
Total recognized in net periodic benefit costs and other comprehensive loss	2,624	$ 822	$ 1,032
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during fiscal year 2020
Net loss	1,496
Prior service credit	(436)
Accumulated other comprehensive loss	$ 1,060

Defined Benefit Pension Obligation - Assumptions (Details) - Defined benefit pension plan	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Net Periodic Benefit Costs:
Discount rate (as a percent)	0.45%	0.90%	0.70%
Rate of compensation increase (as a percent)	1.50%	1.50%	2.00%
Expected long-term return on assets (as a percent)	1.20%	1.40%	1.40%
Benefit Obligation:
Discount rate (as a percent)	0.45%	0.90%
Rate of compensation increase (as a percent)	1.50%	1.50%

Defined Benefit Pension Obligation - Estimated Contributions and Future Benefit Payments (Details) - Defined benefit pension plan $ in Thousands	Jun. 30, 2019 USD ($)
Future Benefit Payments
2020	$ 1,164
2021	1,080
2022	1,017
2023	970
2024	1,443
Thereafter	4,633
Total	$ 10,307

Segment Disclosure - Additional Information (Details)	12 Months Ended
Segment Disclosure - Additional Information (Details)	Jun. 30, 2019 segment
Segment Reporting [Abstract]
Number of operating segments	1
Number of reportable segments	1

Segment Disclosure - Summary of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Segment Information
Total net revenue	$ 117,417	$ 103,221	$ 102,318	$ 95,829	$ 113,786	$ 99,832	$ 100,329	$ 90,950	$ 418,785	$ 404,897	$ 383,414
Americas
Segment Information
Total net revenue									135,683	145,689	151,442
Europe, Middle East, India and Africa
Segment Information
Total net revenue									149,095	120,032	104,026
Asia Pacific
Segment Information
Total net revenue									63,793	72,925	59,278
Japan
Segment Information
Total net revenue									$ 70,214	$ 66,251	$ 68,668

Segment Disclosure - Schedule of Geographic Areas in Which the Company has Long-Lived Tangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Segment Information
Long lived tangible assets	$ 17,122	$ 23,698
Americas
Segment Information
Long lived tangible assets	13,853	19,698
Europe, Middle East, India and Africa
Segment Information
Long lived tangible assets	575	569
Asia (excluding Japan and India)
Segment Information
Long lived tangible assets	1,419	1,635
Japan
Segment Information
Long lived tangible assets	$ 1,275	$ 1,796

Restructuring Charges (Details) - USD ($)		12 Months Ended
Restructuring Charges (Details) - USD ($)	Oct. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Restructuring and Severance Charges
Accrued restructuring charges		$ 500,000
Employee severance
Restructuring and Severance Charges
Workforce affected by cost saving initiative (as a percent)	5.00%
Restructuring charges		1,000,000	$ 0	$ 0
Employee severance \| Cost of Goods Sold and Operating Expense
Restructuring and Severance Charges
Restructuring charges		$ 1,500,000

Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Quarterly Financial Data [Abstract]
Net revenue	$ 117,417	$ 103,221	$ 102,318	$ 95,829	$ 113,786	$ 99,832	$ 100,329	$ 90,950	$ 418,785	$ 404,897	$ 383,414
Gross profit	45,926	40,466	38,380	37,879	47,985	36,249	39,355	38,106	162,651	161,695	141,341
Net loss	$ (1,400)	$ (1,184)	$ (4,640)	$ (9,206)	$ (946)	$ (8,852)	$ (4,719)	$ (9,382)	$ (16,430)	$ (23,899)	$ (29,579)
Net loss per share—basic and diluted	$ (0.02)	$ (0.01)	$ (0.05)	$ (0.11)	$ (0.01)	$ (0.10)	$ (0.06)	$ (0.11)	$ (0.19)	$ (0.28)	$ (0.36)
Shares used in basic and diluted per share calculation	88,202	87,962	87,237	86,479	85,677	85,459	84,586	83,747	87,465	84,893	82,495

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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