Computation of Basic and Diluted Net Loss Per Common Share - Reconciliation of Numerator and Denominator of Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Numerator:
Net loss	$ (5,225)	$ (6,329)
Denominator:
Weighted average shares of common stock (basic)	15,421	13,842
Weighted average shares of common stock (diluted)	15,421	13,842
Per share data:
Basic net loss per share	$ (0.34)	$ (0.46)
Diluted net loss per share	$ (0.34)	$ (0.46)