CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Income Statement [Abstract]
Net sales	$ 111,455	$ 107,954	$ 333,462	$ 358,463
Cost of sales	102,207	101,147	306,819	332,243
Gross profit	9,248	6,807	26,643	26,220
Operating expenses
Research, development and engineering expenses	1,749	1,398	5,129	4,955
Selling, general and administrative expenses	5,735	5,497	15,713	16,184
Goodwill and intangible assets impairment	0	12,448	0	12,448
Total operating expenses	7,484	19,343	20,842	33,587
Operating income (loss)	1,764	(12,536)	5,801	(7,367)
Interest expense, net	754	720	1,988	2,105
Income (loss) before income taxes	1,010	(13,256)	3,813	(9,472)
Income tax provision (benefit)	100	(1,275)	527	(673)
Net income (loss)	$ 910	$ (11,981)	$ 3,286	$ (8,799)
Earnings per share:
Net income (loss) per share — Basic	$ 0.08	$ (1.11)	$ 0.31	$ (0.82)
Weighted average shares outstanding — Basic	10,760	10,760	10,760	10,760
Net income (loss) per share — Diluted	$ 0.08	$ (1.11)	$ 0.30	$ (0.82)
Weighted average shares outstanding — Diluted	10,885	10,760	10,813	10,760