Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Deferred tax assets:
Net operating loss carry-forwards	$ 51,494	$ 69,126	$ 74,548
Tax credit carry-forwards	70,683	68,003	67,364
Depreciation	2,093	3,113	2,755
Intangible amortization	29,538	35,340	32,642
Deferred revenue	15,928	11,625	7,610
Inventory write-downs	13,121	14,501	13,014
Other allowances and accruals	26,508	28,899	32,318
Stock based compensation	2,746	2,792	3,169
Deferred intercompany gain	3,693	3,693	3,693
Ireland goodwill amortization	5,583	6,303	7,132
Other	244	1,175	888
Total deferred tax assets	221,631	244,570	245,133
Valuation allowance	(209,727)	(230,588)	(232,862)
Total net deferred tax assets	11,904	13,982	12,271
Deferred tax liabilities:
Goodwill amortization	(10,415)	(8,575)	(6,691)
Prepaid commissions	(3,931)	(3,166)	(1,958)
Deferred tax liability on foreign withholdings	(676)	(578)	(551)
Total deferred tax liabilities	(15,022)	(12,319)	(9,200)
Net deferred tax assets		1,663	3,071
Net deferred tax (liability)	(3,118)
Recorded as:
Net non-current deferred tax assets	4,599	5,491	5,405
Net non-current deferred tax liabilities	(7,717)	(3,828)	(2,334)
Net deferred tax assets		$ 1,663	$ 3,071
Net deferred tax (liability)	$ (3,118)