CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net sales	$ 157,926	$ 145,796	$ 423,100	$ 400,364
Cost of sales	119,637	109,198	314,362	306,096
Gross profit	38,289	36,598	108,738	94,268
Selling, general and administrative expenses	19,498	19,067	56,377	56,320
Research and development expenses	2,319	2,101	6,280	3,223
Operating income	16,472	15,430	46,081	34,725
Other (expense) income:
Interest expense	(2,157)	(952)	(4,766)	(2,993)
Interest and other income (expense), net	1,229	(852)	2,305	24
Other (expense) income, Total	(928)	(1,804)	(2,461)	(2,969)
Income before income taxes	15,544	13,626	43,620	31,756
Provision for income taxes	5,120	5,215	15,628	11,909
Net income	$ 10,424	$ 8,411	$ 27,992	$ 19,847
Basic income per common share (in dollars per share)	$ 0.36	$ 0.29	$ 0.96	$ 0.69
Diluted income per common share (in dollars per share)	$ 0.35	$ 0.29	$ 0.95	$ 0.68
Weighted average shares outstanding:
Basic (in shares)	29,158	28,773	29,085	28,710
Diluted (in shares)	29,620	29,267	29,536	29,216