Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jun. 29, 2019	Jun. 30, 2018	Jul. 01, 2017
Quarterly Financial Information Disclosure [Abstract]
Gross profit	$ 8,381	$ 6,807	$ 9,880	$ 9,533	$ 9,369	$ 8,155	$ 8,800	$ 7,845	$ 34,601	$ 34,169	$ 38,300
Income (loss) before income taxes	732	(13,256)	1,916	1,868	(3,170)	123	1,035	570	(8,740)	(1,442)	7,256
Net income (loss)	$ 817	$ (11,981)	$ 1,589	$ 1,593	$ (2,177)	$ 644	$ (224)	$ 432	$ (7,982)	$ (1,325)	$ 5,617
Earnings per share – basic (in dollars per share)	$ 0.08	$ (1.11)	$ 0.15	$ 0.15	$ (0.20)	$ 0.06	$ (0.02)	$ 0.04	$ (0.74)	$ (0.12)	$ 0.52
Earnings per share – diluted (in dollars per share)	$ 0.08	$ (1.11)	$ 0.15	$ 0.15	$ (0.20)	$ 0.06	$ (0.02)	$ 0.04	$ (0.74)	$ (0.12)	$ 0.51
Weighted average shares outstanding– basic	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,756
Weighted average shares outstanding — Diluted	10,760	10,760	10,881	10,979	10,760	10,760	10,760	10,760	10,760	10,760	10,917
Net sales	$ 105,581	$ 107,954	$ 123,037	$ 127,472	$ 117,028	$ 108,352	$ 111,725	$ 109,217	$ 464,044	$ 446,322	$ 467,797