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 Jan. 02, 2021	$ 17,366	$ 148	$ 74,181	$ (19)	$ (56,944)
Beginning Balance, shares at Jan. 02, 2021		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
Issuance of common stock under stock option plan	$ 21	$ 0	21
Issuance of common stock under stock option plan, shares	9,692	9,692
Employee stock-based compensation expense	$ 1,621		1,621
Release of restricted stock, including net share settlement	(94)	$ 1	(95)
Release of restricted stock, including net share settlement, Shares		103,799
Other comprehensive income	(69)			(69)
Net loss	(7,547)				(7,547)
Ending Balance, value at Dec. 31, 2022	$ 17,231	$ 169	$ 86,802	$ (24)	$ (69,716)
Ending Balance, shares at Dec. 31, 2022	15,989,662	15,989,662