CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 30, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net sales	$ 145,417,000	$ 123,708,000	$ 293,180,000	$ 260,971,000
Cost of sales	133,654,000	114,788,000	270,555,000	241,672,000
Gross profit	11,763,000	8,920,000	22,625,000	19,299,000
Research, development and engineering expenses	1,758,000	2,287,000	3,999,000	4,583,000
Selling, general and administrative expenses	6,057,000	5,735,000	11,841,000	11,391,000
Gain on insurance proceeds, net of losses	0	(2,710,000)	(431,000)	(3,644,000)
Total operating expenses	7,815,000	5,312,000	15,409,000	12,330,000
Operating income	3,948,000	3,608,000	7,216,000	6,969,000
Interest expense, net	2,961,000	2,507,000	5,972,000	4,394,000
Income before income taxes	987,000	1,101,000	1,244,000	2,575,000
Income tax provision (benefit)	(97,000)	134,000	(175,000)	456,000
Net income	$ 1,084,000	$ 967,000	$ 1,419,000	$ 2,119,000
Net income per share - Basic (in USD per share)	$ 0.10	$ 0.09	$ 0.13	$ 0.20
Weighted average shares outstanding — Basic (in shares)	10,762	10,762	10,762	10,762
Net income per share - Diluted (in USD per share)	$ 0.10	$ 0.09	$ 0.13	$ 0.20
Weighted average shares outstanding — Diluted (in shares)	10,889	10,832	10,889	10,832