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. 28, 2019	$ 22,705	$ 147	$ 73,093	$ 80	$ (50,615)
Beginning Balance, shares at Dec. 28, 2019		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
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	$ 217	$ 1	216
Issuance of common stock under stock option plan, shares	66,234	66,234
Employee stock-based compensation expense	$ 1,628		1,628
Release of restricted stock, including net share settlement	(629)	$ 3	(632)
Release of restricted stock, including net share settlement, Shares		292,132
Other comprehensive income	64			64
Net loss	(5,225)				(5,225)
Ending Balance, value at Jan. 01, 2022	$ 23,299	$ 168	$ 85,255	$ 45	$ (62,169)
Ending Balance, shares at Jan. 01, 2022	15,876,171	15,876,171