Income Taxes - Classification & Deferred Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Components of loss before provision for income taxes
Domestic	$ (35,227)	$ (32,710)	$ (46,178)
Foreign	6,686	9,542	8,388
Loss before provision for income taxes	(28,541)	(23,168)	(37,790)
Current:
State	14	17	33
Foreign	1,292	2,723	1,722
Total current	1,306	2,740	1,755
Deferred:
Foreign	(268)	(404)	664
Total deferred	(268)	(404)	664
Total provision for income taxes	1,038	2,336	2,419
Income tax payable	1,200	2,300	400
Reconciliation of income taxes at the statutory federal income tax rate to the provision for income taxes
At federal statutory rate	(9,988)	(8,108)	(13,226)
State tax, net of federal benefit	14	17	33
Stock-based compensation expense	802	701	579
Debt extinguishment		338
Other non-deductible permanent items	771	877	779
Change in valuation allowance	11,070	10,370	14,744
Credits	(359)	(795)	(79)
Other	83	20
Foreign taxes	(1,355)	(1,084)	(411)
Total provision for income taxes	1,038	2,336	$ 2,419
Deferred tax assets:
Federal and state net operating losses	122,465	117,524
Accrued expenses and reserves	8,374	6,392
Deferred revenue	5,095	4,853
Credits	18,862	18,168
Share-based compensation expense	5,460	6,323
Capitalized research and development	7,441	5,882
Unicap	2,456	2,666
Fixed assets/intangibles	2,451	(961)
Other	1,334	859
Total deferred tax assets	173,938	161,706
Deferred tax liabilities:
Debt discount	(494)	(1,805)
Section 481 adjustment	(768)	(1,140)
Total deferred tax liabilities	(1,262)	(2,945)
Valuation allowance	(171,733)	(158,264)
Net deferred tax assets	943	$ 497
Income tax uncertainties
Cumulative amount of undistributed earnings upon which no U.S. income taxes provided	$ 26,500