Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Deferred tax assets:
Federal and state credits	$ 4,363	$ 2,553
Capital loss carryforwards	4,856	7,940
Net operating loss carryforwards	1,452	3,028
Deferred revenue	10,990	5,881
Other reserves and accruals	6,550	10,701
Intangible assets	1,015	1,730
Property, leasehold improvements, and other basis differences	1,647	2,470
Other temporary differences	651	971
Deferred tax assets, total	31,524	35,274
Deferred tax liabilities:
Deferred revenue	(4,671)	(44)
Intangible assets	(5,431)	(7,017)
Property, leasehold improvements, and other basis differences	(1,340)	(2,634)
Deferred tax liabilities, total	(11,442)	(9,695)
Valuation allowance	10,416	11,259
Net deferred tax assets	$ 9,666	$ 14,320