Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Deferred tax assets:
Net operating loss carry-forwards	$ 36,514	$ 49,429	$ 109,170
Tax credit carry-forwards	54,745	48,093	34,444
Depreciation	2,168	1,422	1,312
Intangible amortization	36,882	35,107	32,919
Deferred revenue, net	1,887	159	3,320
Inventory write-downs	10,277	13,682	11,111
Other allowances and accruals	30,210	25,700	13,002
Stock based compensation	4,114	4,872	3,545
Deferred intercompany gain	3,693
Other	673	3,219	4,270
Total deferred tax assets	181,163	181,683	213,093
Valuation allowance	(169,343)	(177,869)	(212,111)
Total net deferred tax assets	11,820	3,814	982
Deferred tax liabilities:
Goodwill amortization	(4,904)	(3,363)	(6,254)
Prepaid commissions	(1,585)	(1,034)
Deferred tax liability on foreign withholdings	(505)	(357)	(321)
Total deferred tax liabilities	(6,994)	(4,754)	(6,575)
Net Deferred Tax Asset	4,826
Net Deferred Tax (Liability)		(940)	(5,593)
Recorded as:
Net non-current deferred tax assets	6,783	5,195	983
Net non-current deferred tax liabilities	(1,957)	(6,135)	(6,576)
Net Deferred Tax Asset	$ 4,826
Net Deferred Tax (Liability)		$ (940)	$ (5,593)