Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Gross profit	$ 8,606	$ 9,248	$ 8,122	$ 9,273	$ 8,381	$ 6,807	$ 9,880	$ 9,533	$ 35,249	$ 34,601	$ 34,169
Income before income taxes	506	1,010	974	1,829	732	(13,256)	1,916	1,868	4,319	(8,740)	(1,442)
Net income (loss)	$ 1,472	$ 910	$ 824	$ 1,552	$ 817	$ (11,981)	$ 1,589	$ 1,593	$ 4,758	$ (7,982)	$ (1,325)
Earnings per share – basic (in dollars per share)	$ 0.14	$ 0.08	$ 0.08	$ 0.14	$ 0.08	$ (1.11)	$ 0.15	$ 0.15	$ 0.44	$ (0.74)	$ (0.12)
Earnings per share – diluted (in dollars per share)	$ 0.14	$ 0.08	$ 0.08	$ 0.14	$ 0.08	$ (1.11)	$ 0.15	$ 0.15	$ 0.44	$ (0.74)	$ (0.12)
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	10,760
Weighted average shares outstanding — Diluted	10,832	10,885	10,877	10,805	10,760	10,760	10,881	10,979	10,816	10,760	10,760
Revenues	$ 116,018	$ 111,455	$ 116,722	$ 105,285	$ 105,581	$ 107,954	$ 123,037	$ 127,472	$ 449,480	$ 464,044	$ 446,322