Computation of Basic and Diluted Net Loss Per Share - Reconciliation of Numerator and Denominator of Basic and Diluted Net Loss Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Numerator:
Net loss	$ (2,766)	$ (2,241)	$ (4,856)	$ (4,632)
Denominator:
Weighted average shares of common stock (basic)	16,036	15,894	16,018	15,888
Weighted average shares of common stock (diluted)	16,036	15,894	16,018	15,888
Per share data:
Basic net loss per share	$ (0.17)	$ (0.14)	$ (0.3)	$ (0.29)
Diluted net loss per share	$ (0.17)	$ (0.14)	$ (0.3)	$ (0.29)