Income Taxes - Schedule of Significant Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Deferred tax assets:
Federal and state net operating losses	$ 77,870	$ 122,465
Accrued expenses and reserves	6,290	8,374
Deferred revenue	2,985	5,095
Credits	20,857	18,862
Share-based compensation expense	2,233	5,460
Capitalized research and development	3,988	7,441
Unicap	1,571	2,456
Fixed assets/intangibles	1,486	2,451
Other	1,650	1,334
Total deferred tax assets	118,930	173,938
Deferred tax liabilities:
Debt discount		(494)
Section 481 adjustment	(239)	(768)
Total deferred tax liabilities	(239)	(1,262)
Valuation allowance	(117,674)	(171,733)
Net deferred tax assets	$ 1,017	$ 943