Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 26, 2015	Sep. 26, 2015	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 118,544	$ 113,601	$ 118,517	$ 117,135	$ 123,905	$ 118,448	$ 116,403	$ 126,209	$ 467,797	$ 484,965	$ 433,997
Gross profit	9,840	9,139	9,612	9,709	10,841	9,955	9,110	8,919	38,300	38,825	33,305
Income before income taxes	1,777	1,283	1,995	2,201	2,885	2,137	1,882	1,247	7,256	8,151	5,300
Net income	$ 1,336	$ 961	$ 1,528	$ 1,792	$ 2,146	$ 1,783	$ 1,787	$ 817	$ 5,617	$ 6,533	$ 4,304
Earnings per share – basic (in dollars per share)	$ 0.12	$ 0.09	$ 0.14	$ 0.17	$ 0.20	$ 0.17	$ 0.17	$ 0.08	$ 0.52	$ 0.61	$ 0.41
Earnings per share – diluted (in dollars per share)	$ 0.12	$ 0.09	$ 0.14	$ 0.16	$ 0.20	$ 0.16	$ 0.16	$ 0.07	$ 0.51	$ 0.58	$ 0.38
Weighted average shares outstanding– basic	10,760	10,759	10,758	10,748	10,714	10,711	10,710	10,706	10,756	10,710	10,572
Weighted average shares outstanding — Diluted	10,856	10,957	10,968	10,922	10,966	11,068	11,418	11,391	10,917	11,278	11,286