Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Beginning Balance, value at Dec. 29, 2018	$ 29,961		$ 145	$ 71,548	$ 70	$ (41,802)
Beginning Balance, shares at Dec. 29, 2018			13,602,052
Issuance of common stock under stock option plan, shares			210
Employee stock-based compensation expense	1,398			1,398
Release of restricted stock, net of taxes paid	(151)		$ (2)	(153)
Release of restricted stock, shares net of taxes paid			176,610
Other comprehensive income	32				32
Net loss	(7,252)					(7,252)
Ending Balance, value at Sep. 28, 2019	23,988		$ 147	72,793	102	(49,054)
Ending Balance, shares at Sep. 28, 2019			13,778,872
Beginning Balance, value at Jun. 29, 2019	25,629		$ 147	72,685	66	(47,269)
Beginning Balance, shares at Jun. 29, 2019			13,746,959
Employee stock-based compensation expense	158			158
Release of restricted stock, net of taxes paid	(50)		$ 0	(50)
Release of restricted stock, shares net of taxes paid			31,913
Other comprehensive income	36				36
Net loss	(1,785)					(1,785)
Ending Balance, value at Sep. 28, 2019	23,988		$ 147	72,793	102	(49,054)
Ending Balance, shares at Sep. 28, 2019			13,778,872
Beginning Balance, value at Dec. 28, 2019	$ 22,705	[1]	$ 147	73,093	80	(50,615)
Beginning Balance, shares at Dec. 28, 2019	13,785,233		13,785,233
Employee 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	(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		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
Employee 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	(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		13,897,353

[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 December 28, 2019.