CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net sales	$ 546,951	$ 510,179	$ 499,690
Cost of sales	411,517	395,476	401,419
Gross profit	135,434	114,703	98,271
Selling, general and administrative expenses	73,159	65,209	61,021
Research and development expenses	5,942	5,222	2,834
Operating income	56,333	44,272	34,416
Other (expense) income:
Interest expense	(3,954)	(2,100)	(2,122)
Interest and other income, net	1,486	2,502	2,256
Other (expense) income, Total	(2,468)	402	134
Income before income taxes	53,865	44,674	34,550
Provision for income taxes	20,382	15,674	12,222
Net income	$ 33,483	$ 29,000	$ 22,328
Basic income per common share (in dollars per share)	$ 1.17	$ 1.04	$ 0.83
Diluted income per common share (in dollars per share)	$ 1.14	$ 1.02	$ 0.81
Weighted average shares outstanding:
Basic (in shares)	28,731	28,001	27,050
Diluted (in shares)	29,247	28,563	27,450