CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net sales	$ 129,261	$ 111,748
Cost of sales	95,527	90,243
Gross profit	33,734	21,505
Selling, general and administrative expenses	15,764	12,987
Research and development expenses	554	905
Operating income	17,416	7,613
Other income (expense):
Interest expense	(453)	(546)
Interest and other income, net	611	555
Nonoperating income expense	158	9
Income before income taxes	17,574	7,622
Income tax provision	6,239	2,802
Net income (loss)	$ 11,335	$ 4,820
Net income per common share	$ 0.41	$ 0.18
Diluted net income per common share	$ 0.40	$ 0.18
Weighted average shares outstanding:
Basic	27,757	26,805
Diluted	28,390	27,229