Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Deferred tax assets:
Net operating loss carry-forwards	$ 49,429	$ 109,170	$ 108,563
Tax credit carry-forwards	48,093	34,444	32,730
Depreciation	1,422	1,312
Intangible amortization	35,107	32,919	28,480
Deferred revenue, net	159	3,320	3,190
Inventory write-downs	13,682	11,111	6,207
Other allowances and accruals	25,700	13,002	10,568
Stock based compensation	4,872	3,545	4,048
Other	2,185	4,270	4,275
Total deferred tax assets	180,649	213,093	198,061
Valuation allowance	(177,869)	(212,111)	(196,640)
Total net deferred tax assets	2,780	982	1,421
Deferred tax liabilities:
Depreciation			(343)
Goodwill amortization	(3,363)	(6,254)	(4,459)
Deferred tax liability on foreign withholdings	(357)	(321)	(235)
Total deferred tax liabilities	(3,720)	(6,575)	(5,037)
Net deferred tax liabilities	(940)	(5,593)	(3,616)
Recorded as:
Net non-current deferred tax assets	5,195	983	1,077
Net non-current deferred tax liabilities	(6,135)	(6,576)	(4,693)
Net deferred tax liabilities	$ (940)	$ (5,593)	$ (3,616)