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. 29, 2020	[1]		46,807,587
Beginning balance at Dec. 29, 2020		$ 29,699	$ 468	[1]	$ (35,000)	$ 202,970	$ (138,739)
Treasury stock, beginning balance (in shares) at Dec. 29, 2020					2,423,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock plan transactions and other (in shares)	[1]		282,871
Stock plan transactions and other		(481)	$ 3	[1]		(484)
Stock-based compensation expense		3,481				3,481
L Catterton warrants exercised (in shares)	[1]		975,458
L Catterton warrants exercised		0	$ 10	[1]		(10)
Net income (loss)		8,403					8,403
Ending balance (in shares) at Sep. 28, 2021	[1]		48,065,916
Ending balance at Sep. 28, 2021		41,102	$ 481	[1]	$ (35,000)	205,957	(130,336)
Treasury stock, ending balance (in shares) at Sep. 28, 2021					2,423,871
Beginning balance (in shares) at Jun. 29, 2021			48,011,761
Beginning balance at Jun. 29, 2021		35,443	$ 480		$ (35,000)	204,996	(135,033)
Treasury stock, beginning balance (in shares) at Jun. 29, 2021					2,423,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock plan transactions and other (in shares)			54,155
Stock plan transactions and other		(202)	$ 1			(203)
Stock-based compensation expense		1,164				1,164
Net income (loss)		4,697					4,697
Ending balance (in shares) at Sep. 28, 2021	[1]		48,065,916
Ending balance at Sep. 28, 2021		$ 41,102	$ 481	[1]	$ (35,000)	205,957	(130,336)
Treasury stock, ending balance (in shares) at Sep. 28, 2021					2,423,871
Beginning balance (in shares) at Dec. 28, 2021		45,701,280	48,125,151	[1]
Beginning balance at Dec. 28, 2021		$ 37,633	$ 481	[1]	$ (35,000)	207,226	(135,074)
Treasury stock, beginning balance (in shares) at Dec. 28, 2021		2,423,871			2,423,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock plan transactions and other (in shares)	[1]		318,643
Stock plan transactions and other		$ (373)	$ 3	[1]		(376)
Stock-based compensation expense		3,410				3,410
Net income (loss)		$ (4,289)					(4,289)
Ending balance (in shares) at Sep. 27, 2022		46,019,923	48,443,794	[1]
Ending balance at Sep. 27, 2022		$ 36,381	$ 484	[1]	$ (35,000)	210,260	(139,363)
Treasury stock, ending balance (in shares) at Sep. 27, 2022		2,423,871			2,423,871
Beginning balance (in shares) at Jun. 28, 2022	[1]		48,384,193
Beginning balance at Jun. 28, 2022		$ 34,887	$ 484	[1]	$ (35,000)	209,561	(140,158)
Treasury stock, beginning balance (in shares) at Jun. 28, 2022					2,423,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock plan transactions and other (in shares)	[1]		59,601
Stock plan transactions and other		(56)				(56)
Stock-based compensation expense		755				755
Net income (loss)		$ 795					795
Ending balance (in shares) at Sep. 27, 2022		46,019,923	48,443,794	[1]
Ending balance at Sep. 27, 2022		$ 36,381	$ 484	[1]	$ (35,000)	$ 210,260	$ (139,363)
Treasury stock, ending balance (in shares) at Sep. 27, 2022		2,423,871			2,423,871

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