Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 30, 2017	15,017,522				2,823,172
Balance at Dec. 30, 2017	$ 751	$ 104,540	$ (2,395)	$ (65,878)	$ (14,987)	$ 22,031
Issuance of stock under employee stock purchase plan (in shares)	90,877
Issuance of stock under employee stock purchase plan	$ 4	381				385
Translation adjustment			(360)			(360)
Issuance of stock upon vesting of restricted share units (in shares)	29,195
Issuance of stock upon vesting of restricted share units	$ 1	(1)
Share based compensation expense		544				544
Accrued dividends forfeited		6				6
Common stock issued for acquisition (in shares)	440,751
Common stock issued for acquisition	$ 22	1,856				1,878
Net income				2,715		2,715
Balance (in shares) at Dec. 29, 2018	15,578,345				2,823,172
Balance at Dec. 29, 2018	$ 778	107,326	(2,755)	(63,163)	$ (14,987)	27,199
Issuance of stock under employee stock purchase plan (in shares)	118,526
Issuance of stock under employee stock purchase plan	$ 6	315				321
Translation adjustment			7			7
Issuance of stock upon vesting of restricted share units (in shares)	130,020
Issuance of stock upon vesting of restricted share units	$ 7	(7)
Share based compensation expense		806				806
Accrued dividends forfeited		12				12
Net income				4,058		4,058
Balance (in shares) at Dec. 28, 2019	15,826,891				2,823,172
Balance at Dec. 28, 2019	$ 791	$ 108,452	$ (2,748)	$ (59,105)	$ (14,987)	$ 32,403