Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning Balance, value at Dec. 28, 2019	$ 22,705		$ 147	$ 73,093	$ 80	$ (50,615)
Beginning Balance, shares at Dec. 28, 2019			13,785,233
Stock-based compensation expense	774			774
Release of restricted stock, net of taxes paid	(29)		$ (1)	(30)
Release of restricted stock, shares net of taxes paid			112,120
Other comprehensive income (loss)	(48)				(48)
Net loss	(6,150)					(6,150)
Ending Balance, value at Sep. 26, 2020	17,252		$ 148	73,837	32	(56,765)
Ending Balance, shares at Sep. 26, 2020			13,897,353
Beginning Balance, value at Jun. 27, 2020	18,794		$ 148	73,619	73	(55,046)
Beginning Balance, shares at Jun. 27, 2020			13,856,969
Stock-based compensation expense	243			243
Release of restricted stock, net of taxes paid	(25)			(25)
Release of restricted stock, shares net of taxes paid			40,384
Other comprehensive income (loss)	(41)				(41)
Net loss	(1,719)					(1,719)
Ending Balance, value at Sep. 26, 2020	17,252		$ 148	73,837	32	(56,765)
Ending Balance, shares at Sep. 26, 2020			13,897,353
Beginning Balance, value at Jan. 02, 2021	$ 17,366	[1]	$ 148	74,181	(19)	(56,944)
Beginning Balance, shares at Jan. 02, 2021	13,899,683		13,899,683
Issuance of common stock, net of issuance costs	$ 9,878		$ 16	9,862
Issuance of common stock, net of issuance costs, shares			1,618,122
Issuance of common stock under stock option plan	$ 175		$ 1	174
Issuance of common stock under stock option plan, shares	53,220		53,220
Stock-based compensation expense	$ 1,263			1,263
Release of restricted stock, net of taxes paid	(626)		$ (3)	(629)
Release of restricted stock, shares net of taxes paid			291,498
Other comprehensive income (loss)	48				48
Net loss	(2,782)					(2,782)
Ending Balance, value at Oct. 02, 2021	$ 25,322		$ 168	84,851	29	(59,726)
Ending Balance, shares at Oct. 02, 2021	15,862,523		15,862,523
Beginning Balance, value at Jul. 03, 2021	$ 26,880		$ 167	84,265	9	(57,561)
Beginning Balance, shares at Jul. 03, 2021			15,783,704
Issuance of common stock under stock option plan	78			78
Issuance of common stock under stock option plan, shares			29,916
Stock-based compensation expense	617			617
Release of restricted stock, net of taxes paid	(108)		$ (1)	(109)
Release of restricted stock, shares net of taxes paid			48,903
Other comprehensive income (loss)	20				20
Net loss	(2,165)					(2,165)
Ending Balance, value at Oct. 02, 2021	$ 25,322		$ 168	$ 84,851	$ 29	$ (59,726)
Ending Balance, shares at Oct. 02, 2021	15,862,523		15,862,523

[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended January 2, 2021.