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
	Apr. 01, 2023	Apr. 02, 2022
Numerator:
Net loss	$ (2,090)	$ (2,391)
Denominator:
Weighted average shares of common stock (basic)	16,001	15,881
Weighted average shares of common stock (diluted)	16,001	15,881
Per share data:
Basic net loss per share	$ (0.13)	$ (0.15)
Diluted net loss per share	$ (0.13)	$ (0.15)