Nature Of Business And Summary Of Significant Accounting Policies (Schedule Of Changes In The Warranty Reserve Carrying Value) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Product Warranty Liability [Line Items]
Balance - Beginning of Year	$ 1,187	$ 1,037	$ 861
Settlements during the period	(1,650)	(1,557)	(1,353)
Additional warranty liability recorded	1,710	1,707	1,529
Balance - End of Year	$ 1,247	$ 1,187	$ 1,037