Unaudited Quarterly Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended									12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010		Sep. 30, 2010	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Quarterly Financial Information [Line Items]
Net sales	$ 110,949	$ 121,415	$ 110,707	$ 101,317	$ 121,204	$ 117,881	$ 85,683	[1]	$ 87,660	$ 444,388	$ 412,428	$ 346,631
Gross profit	20,714	22,155	20,644	18,519	19,996	19,432	13,123	[1]	13,287	82,032	65,838	54,155
Net income (loss)	$ 3,981	$ 5,379	$ 4,588	$ 3,033	$ 3,494	$ 3,846	$ (1,169)	[1]	$ 2,797	$ 16,981	$ 8,968	$ 6,581
Net income (loss) per diluted share	$ 0.15	$ 0.20	$ 0.17	$ 0.11	$ 0.13	$ 0.14	$ (0.05)	[1]	$ 0.11	$ 0.63	$ 0.34	$ 0.26

[1] Includes approximate $2,600 tax charge related to the repatriation of earnings from certain foreign subsidiaries, in connection with the acquisition of Rising and approximately $1,060 of transaction costs related to this acquisition.