CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jul. 02, 2016
Income Statement [Abstract]
Net sales	$ 446,322	$ 467,797	$ 484,965
Cost of sales	412,153	429,497	446,140
Gross profit	34,169	38,300	38,825
Operating expenses
Research, development and engineering expenses	6,186	6,393	6,397
Selling, general and administrative expenses	22,334	22,363	22,012
Loss on settlement of arbitration	4,535	0	0
Total operating expenses	33,055	28,756	28,409
Operating income	1,114	9,544	10,416
Interest expense, net	2,556	2,288	2,265
Income before income taxes	(1,442)	7,256	8,151
Income tax provision	(117)	1,639	1,618
Net income (loss)	$ (1,325)	$ 5,617	$ 6,533
Earnings per share:
Net income (loss) per share — Basic	$ (0.12)	$ 0.52	$ 0.61
Weighted average shares outstanding– basic	10,760	10,756	10,710
Net income (loss) per share — Diluted	$ (0.12)	$ 0.51	$ 0.58
Weighted average shares outstanding — Diluted	10,760	10,917	11,278