CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Income Statement [Abstract]
Net sales	$ 116,722	$ 123,037	$ 222,007	$ 250,509
Cost of sales	108,600	113,157	204,612	231,096
Gross profit	8,122	9,880	17,395	19,413
Operating expenses
Research, development and engineering expenses	1,720	1,857	3,380	3,557
Selling, general and administrative expenses	4,904	5,399	9,978	10,687
Total operating expenses	6,624	7,256	13,358	14,244
Operating income	1,498	2,624	4,037	5,169
Interest expense, net	524	708	1,234	1,385
Income before income taxes	974	1,916	2,803	3,784
Income tax provision	150	327	427	602
Net income	$ 824	$ 1,589	$ 2,376	$ 3,182
Earnings per share:
Net income per share — Basic	$ 0.08	$ 0.15	$ 0.22	$ 0.30
Weighted average shares outstanding — Basic	10,760	10,760	10,760	10,760
Net income per share — Diluted	$ 0.08	$ 0.15	$ 0.22	$ 0.29
Weighted average shares outstanding — Diluted	10,877	10,881	10,811	10,986