Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Income Taxes [Abstract]
Employee liabilities	$ 16,184	$ 19,275
Tax credit carry overs	9,031	501
Inventories	5,840	10,126
Provision for warranties	3,904	4,766
Provision for doubtful debts	3,817	2,967
Net operating loss carryforwards	26,355	36,117
Capital loss carryover	3,932	2,625
Property, plant and equipment	6,121	3,850
Stock-based compensation expense	9,322	15,143
Other	4,515	4,569
Deferred tax assets, Gross	89,021	99,939
Less valuation allowance	(12,297)	(15,259)
Deferred tax assets	76,724	84,680
Goodwill and other intangibles	(35,990)	(36,999)
Deferred tax liabilities	(35,990)	(36,999)
Net deferred tax asset	$ 40,734	$ 47,681