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		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Numerator:
Net loss	$ (1,754)	$ (1,767)	$ (6,610)	$ (6,399)
Denominator:
Weighted average shares of common stock (basic)	16,231	15,986	16,089	15,921
Weighted average shares of common stock (diluted)	16,231	15,986	16,089	15,921
Per share data:
Basic net loss per share	$ (0.11)	$ (0.11)	$ (0.41)	$ (0.4)
Diluted net loss per share	$ (0.11)	$ (0.11)	$ (0.41)	$ (0.4)