Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Income Taxes [Abstract]
Employee liabilities	$ 30,080	$ 21,272
Tax credit carry overs	13,753	9,295
Inventories	11,734	9,129
Provision for warranties	4,149	3,585
Provision for doubtful debts	7,334	6,594
Net operating loss carryforwards	33,377	38,035
Capital loss carryover	6,912	10,864
Stock-based compensation expense	6,080	6,035
Deferred revenue	17,839	15,343
Research and development capitalization	58,789	39,195
Lease liabilities	25,751
Other	(5,851)	(3,006)
Deferred tax assets, Gross	209,947	156,341
Less valuation allowance	(13,106)	(16,891)
Deferred tax assets	196,841	139,450
Goodwill and other intangibles	(104,563)	(111,396)
Right of use assets	(23,693)
Deferred tax liabilities	(128,256)	(111,396)
Net deferred tax asset	$ 68,585	$ 28,054