Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock		Treasury	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 28, 2021			48,125,151
Beginning balance at Dec. 28, 2021		$ 37,633	$ 481		$ (35,000)	$ 207,226	$ (135,074)
Treasury stock, beginning balance (in shares) at Dec. 28, 2021					2,423,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock plan transactions and other (in shares)			133,443
Stock plan transactions and other		(299)	$ 2			(301)
Stock-based compensation expense		1,140				1,140
Net loss		(6,429)					(6,429)
Ending balance (in shares) at Mar. 29, 2022	[1]		48,258,594
Ending balance at Mar. 29, 2022		$ 32,045	$ 483	[1]	$ (35,000)	208,065	(141,503)
Treasury stock, ending balance (in shares) at Mar. 29, 2022					2,423,871
Beginning balance (in shares) at Jan. 03, 2023		46,040,427	48,464,298
Beginning balance at Jan. 03, 2023		$ 38,364	$ 485		$ (35,000)	211,267	(138,388)
Treasury stock, beginning balance (in shares) at Jan. 03, 2023		2,423,871			2,423,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock plan transactions and other (in shares)			317,403
Stock plan transactions and other		$ (641)	$ 3			(644)
Stock-based compensation expense		1,323				1,323
Net loss		$ (3,115)					(3,115)
Ending balance (in shares) at Apr. 04, 2023		46,357,830	48,781,701	[1]
Ending balance at Apr. 04, 2023		$ 35,931	$ 488	[1]	$ (35,000)	$ 211,946	$ (141,503)
Treasury stock, ending balance (in shares) at Apr. 04, 2023		2,423,871			2,423,871

[1] Unless otherwise noted, activity relates to Class A common stock.