CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 02, 2022	Apr. 03, 2021	Apr. 02, 2022	Apr. 03, 2021
Income Statement [Abstract]
Net sales	$ 138,391	$ 134,600	$ 405,609	$ 386,069
Cost of sales	126,883	123,504	374,155	354,336
Gross profit	11,508	11,096	31,454	31,733
Operating expenses
Research, development and engineering expenses	2,526	2,655	7,473	7,292
Selling, general and administrative expenses	6,193	5,865	17,447	16,349
Total operating expenses	8,719	8,520	24,920	23,641
Operating income	2,789	2,576	6,534	8,092
Interest expense, net	1,551	1,020	3,638	2,549
Income before income taxes	1,238	1,556	2,896	5,543
Income tax provision	231	689	487	1,377
Net income	$ 1,007	$ 867	$ 2,409	$ 4,166
Earnings per share:
Net income per share — Basic	$ 0.09	$ 0.08	$ 0.22	$ 0.39
Weighted average shares outstanding — Basic	10,762	10,760	10,762	10,760
Net income per share — Diluted	$ 0.09	$ 0.08	$ 0.22	$ 0.38
Weighted average shares outstanding — Diluted	11,062	11,429	11,059	11,040