Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Deferred tax assets:
Net operating loss carry-forwards	$ 109,170	$ 108,563	$ 114,151
Tax credit carry-forwards	34,444	32,730	30,824
Depreciation	1,312
Intangible amortization	32,919	28,480	17,978
Deferred revenue (net)	10,612	7,955	7,811
Warrant amortization			1,355
Inventory write-downs	11,111	6,207	6,048
Other allowances and accruals	13,002	10,568	8,645
Stock based compensation	3,545	4,048	6,783
Other	4,270	4,275	5,902
Total deferred tax assets	220,385	202,826	199,497
Valuation allowance	(219,403)	(201,405)	(197,576)
Total net deferred tax assets	982	1,421	1,921
Deferred tax liabilities:
Depreciation		(343)	(707)
Goodwill amortization	(6,254)	(4,459)	(2,787)
Deferred tax liability on foreign withholdings	(321)	(235)	(194)
Total deferred tax liabilities	(6,575)	(5,037)	(3,688)
Net deferred tax assets (liabilities)	(5,593)	(3,616)	(1,767)
Recorded as:
Net current deferred tax assets			760
Net non-current deferred tax assets	982	1,077	452
Net non-current deferred tax liabilities	(6,575)	(4,693)	(2,979)
Net deferred tax assets (liabilities)	$ (5,593)	$ (3,616)	$ (1,767)