Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Income Taxes [Abstract]
Employee liabilities	$ 21,272	$ 18,104
Tax credit carry overs	9,295	15,666
Inventories	9,129	4,905
Provision for warranties	3,585	3,551
Provision for doubtful debts	6,594	5,532
Net operating loss carryforwards	38,035	53,315
Capital loss carryover	10,864	6,640
Property, plant and equipment	(724)
Property, plant and equipment		3,002
Stock-based compensation expense	6,035	10,769
Deferred revenue	15,343	9,619
Research and development capitalization	39,195	17,910
Other	(2,282)	(332)
Deferred tax assets, Gross	156,341	148,681
Less valuation allowance	(16,891)	(11,644)
Deferred tax assets	139,450	137,037
Goodwill and other intangibles	(111,396)	(102,939)
Deferred tax liabilities	(111,396)	(102,939)
Net deferred tax asset	$ 28,054	$ 34,098