Condensed Consolidated Statements of Shareholders' (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Jan. 02, 2021		25,390
Beginning balance at Jan. 02, 2021	$ (223,978)	$ 254	$ 0	$ (224,232)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	66,634			66,634
Exercise of common stock options (in shares)		106
Exercise of common stock options	2,460	$ 1	2,459
Stock-based compensation (in shares)		314
Stock-based compensation	6,416	$ 3	6,413
Repurchases of common stock (in shares)		(1,346)
Repurchases of common stock	(184,182)	$ (13)	(8,872)	(175,297)
Ending balance (in shares) at Apr. 03, 2021		24,464
Ending balance at Apr. 03, 2021	$ (332,650)	$ 245	0	(332,895)
Beginning balance (in shares) at Jan. 01, 2022	22,683	22,683
Beginning balance at Jan. 01, 2022	$ (424,953)	$ 227	3,971	(429,151)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,074			2,074
Exercise of common stock options (in shares)		21
Exercise of common stock options	531		531
Stock-based compensation (in shares)		341
Stock-based compensation	4,133	$ 3	4,130
Repurchases of common stock (in shares)		(813)
Repurchases of common stock	$ (50,998)	$ (8)	(8,632)	(42,358)
Ending balance (in shares) at Apr. 02, 2022	22,232	22,232
Ending balance at Apr. 02, 2022	$ (469,213)	$ 222	$ 0	$ (469,435)