CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
Income Statement [Abstract]
Net sales	$ 467,797	$ 484,965	$ 433,997
Cost of sales	429,497	446,140	400,692
Gross profit	38,300	38,825	33,305
Operating expenses
Research, development and engineering expenses	6,393	6,397	5,784
Selling, general and administrative expenses	22,363	22,012	20,868
Total operating expenses	28,756	28,409	26,652
Operating income	9,544	10,416	6,653
Interest expense, net	2,288	2,265	1,353
Income before income taxes	7,256	8,151	5,300
Income tax provision	1,639	1,618	996
Net income	$ 5,617	$ 6,533	$ 4,304
Earnings per share:
Net income per share — Basic	$ 0.52	$ 0.61	$ 0.41
Weighted average shares outstanding– basic	10,756	10,710	10,572
Net income per share — Diluted	$ 0.51	$ 0.58	$ 0.38
Weighted average shares outstanding — Diluted	10,917	11,278	11,286