Business Combinations (Schedule of Unaudited Pro Forma Operating Results) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Business Acquisition [Line Items]
Net sales	$ 432,810	$ 395,093
Net income	$ 12,788	$ 10,330
Net income per common share	$ 0.48	$ 0.40
Diluted net income per common share	$ 0.48	$ 0.39