Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 03, 2021	Apr. 03, 2021	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jul. 03, 2021	Jun. 27, 2020	Jun. 29, 2019
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 132,629	$ 134,600	$ 128,262	$ 123,207	$ 116,018	$ 111,455	$ 116,722	$ 105,285	$ 518,698	$ 449,480	$ 464,044
Gross profit	10,306	11,096	10,622	10,015	8,606	9,248	8,122	9,273	42,039	35,249	34,601
Income before income taxes	370	1,556	1,872	2,115	506	1,010	974	1,829	5,913	4,319	(8,740)
Net income (loss)	$ 175	$ 867	$ 1,580	$ 1,719	$ 1,472	$ 910	$ 824	$ 1,552	$ 4,341	$ 4,758	$ (7,982)
Net income (loss) per share – basic	$ 0.02	$ 0.08	$ 0.15	$ 0.16	$ 0.14	$ 0.08	$ 0.08	$ 0.14	$ 0.40	$ 0.44	$ (0.74)
Net income (loss) per share – diluted	$ 0.02	$ 0.08	$ 0.14	$ 0.16	$ 0.14	$ 0.08	$ 0.08	$ 0.14	$ 0.39	$ 0.44	$ (0.74)
Weighted average shares outstanding– basic	10,762	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,760	10,760
Weighted average shares outstanding — Diluted	11,169	11,429	11,385	11,040	10,832	10,885	10,877	10,805	11,046	10,816	10,760