CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net sales	$ 638,318	$ 558,524	$ 542,944
Cost of sales	497,526	415,739	411,517
Gross profit	140,792	142,785	131,427
Selling, general and administrative expenses	102,340	76,820	73,159
Research and development expenses	7,898	7,937	5,942
Operating income	30,554	58,028	52,326
Other (expense) income:
Interest expense	(15,770)	(6,997)	(3,954)
Interest and other income, net	2,577	2,823	1,486
Other (expense) income, Total	(13,193)	(4,174)	(2,468)
Income before income taxes	17,361	53,854	49,858
Provision for income taxes	5,985	19,088	18,980
Net income	$ 11,376	$ 34,766	$ 30,878
Basic income per common share (in dollars per share)	$ 0.35	$ 1.19	$ 1.07
Diluted income per common share (in dollars per share)	$ 0.35	$ 1.18	$ 1.06
Weighted average shares outstanding:
Basic (in shares)	32,283	29,110	28,731
Diluted (in shares)	32,632	29,581	29,247