CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net sales	$ 111,725	$ 118,517	$ 220,942	$ 235,652
Cost of sales	102,925	108,905	204,297	216,331
Gross profit	8,800	9,612	16,645	19,321
Operating expenses
Research, development and engineering expenses	1,495	1,603	3,005	3,187
Selling, general and administrative expenses	5,654	5,462	10,825	10,797
Total operating expenses	7,149	7,065	13,830	13,984
Operating income	1,651	2,547	2,815	5,337
Interest expense, net	616	552	1,210	1,141
Income before income taxes	1,035	1,995	1,605	4,196
Income tax provision	1,259	467	1,397	876
Net income (loss)	$ (224)	$ 1,528	$ 208	$ 3,320
Earnings per share:
Net income (loss) per share — Basic	$ (0.02)	$ 0.14	$ 0.02	$ 0.31
Weighted average shares outstanding — Basic	10,760	10,758	10,760	10,753
Net income (loss) per share — Diluted	$ (0.02)	$ 0.14	$ 0.02	$ 0.30
Weighted average shares outstanding — Diluted	10,760	10,968	10,760	10,919