Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	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	210
Employee stock-based compensation expense	$ 1,703		1,703
Release of restricted stock, including net share settlement	(156)	$ 2	(158)
Release of restricted stock, including net share settlement, Shares		182,971
Other comprehensive income	10			10
Net loss	(8,813)				(8,813)
Ending Balance, value at Dec. 28, 2019	$ 22,705	$ 147	73,093	80	(50,615)
Ending Balance, shares at Dec. 28, 2019	13,785,233	13,785,233
Employee stock-based compensation expense	$ 1,119		1,119
Release of restricted stock, including net share settlement	(30)	$ 1	(31)
Release of restricted stock, including net share settlement, Shares		114,450
Other comprehensive income	(99)			(99)
Net loss	(6,329)				(6,329)
Ending Balance, value at Jan. 02, 2021	$ 17,366	$ 148	$ 74,181	$ (19)	$ (56,944)
Ending Balance, shares at Jan. 02, 2021	13,899,683	13,899,683