CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 29, 2018	Dec. 30, 2017
Income Statement [Abstract]
Net sales	$ 123,037	$ 111,725	$ 250,509	$ 220,942
Cost of sales	113,157	102,925	231,096	204,297
Gross profit	9,880	8,800	19,413	16,645
Operating expenses
Research, development and engineering expenses	1,857	1,495	3,557	3,005
Selling, general and administrative expenses	5,399	5,654	10,687	10,825
Total operating expenses	7,256	7,149	14,244	13,830
Operating income	2,624	1,651	5,169	2,815
Interest expense, net	708	616	1,385	1,210
Income before income taxes	1,916	1,035	3,784	1,605
Income tax provision	327	1,259	602	1,397
Net income (loss)	$ 1,589	$ (224)	$ 3,182	$ 208
Earnings per share:
Net income (loss) per share — Basic	$ 0.15	$ (0.02)	$ 0.30	$ 0.02
Weighted average shares outstanding — Basic	10,760	10,760	10,760	10,760
Net income (loss) per share — Diluted	$ 0.15	$ (0.02)	$ 0.29	$ 0.02
Weighted average shares outstanding — Diluted	10,881	10,760	10,986	10,760