Income Taxes (Schedule Of Deferred Tax Assets And Liabilities Classified As Current And Non-Current) (Details) (USD $) In Thousands	Jun. 30, 2011	Jun. 30, 2010
Income Taxes
Employee liabilities	$ 8,012	$ 5,472
Inventories	4,837	5,913
Provision for warranties	4,701	3,379
Provision for doubtful debts	3,239	1,880
Net operating loss carryforwards	3,704	2,577
Foreign tax credits	0	3,055
Patent costs	0	922
Capital loss carryover	360	349
Stock-based compensation expense	17,938	18,671
Other	739	754
Deferred tax assets, Gross	43,530	42,972
Less valuation allowance	(2,066)	(5,159)
Deferred tax assets	41,464	37,813
Unrealized foreign exchange gains	(6,036)	(3,642)
Property, plant and equipment	(1,148)	(1,747)
Goodwill and other intangibles	(10,174)	(10,465)
Deferred tax liabilities	(17,358)	(15,854)
Net deferred tax asset	$ 24,106	$ 21,959