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 Dec. 28, 2019		27,961
Beginning balance at Dec. 28, 2019	$ (159,431)	$ 280	$ 0	$ (159,711)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	39,140			39,140
Exercise of common stock options (in shares)		167
Exercise of common stock options	3,283	$ 1	3,282
Stock-based compensation (in shares)		396
Stock-based compensation	2,051	$ 4	2,047
Repurchases of common stock (in shares)		(888)
Repurchases of common stock	(40,952)	$ (9)	(5,329)	(35,614)
Ending balance (in shares) at Mar. 28, 2020		27,636
Ending balance at Mar. 28, 2020	(155,909)	$ 276	0	(156,185)
Beginning balance (in shares) at Dec. 28, 2019		27,961
Beginning balance at Dec. 28, 2019	(159,431)	$ 280	0	(159,711)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	77,830
Ending balance (in shares) at Sep. 26, 2020		27,757
Ending balance at Sep. 26, 2020	(102,827)	$ 278	14,390	(117,495)
Beginning balance (in shares) at Mar. 28, 2020		27,636
Beginning balance at Mar. 28, 2020	(155,909)	$ 276	0	(156,185)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(12,630)			(12,630)
Exercise of common stock options (in shares)		33
Exercise of common stock options	817		817
Stock-based compensation (in shares)		71
Stock-based compensation	5,033	$ 1	5,032
Repurchases of common stock (in shares)		(15)
Repurchases of common stock	(329)		(330)	1
Ending balance (in shares) at Jun. 27, 2020		27,725
Ending balance at Jun. 27, 2020	(163,018)	$ 277	5,519	(168,814)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	51,320			51,320
Exercise of common stock options (in shares)		20
Exercise of common stock options	550	$ 1	549
Stock-based compensation (in shares)		14
Stock-based compensation	8,470		8,470
Repurchases of common stock (in shares)		(2)
Repurchases of common stock	(149)		(148)	(1)
Ending balance (in shares) at Sep. 26, 2020		27,757
Ending balance at Sep. 26, 2020	$ (102,827)	$ 278	14,390	(117,495)
Beginning balance (in shares) at Jan. 02, 2021	25,390	25,390
Beginning balance at Jan. 02, 2021	$ (223,978)	$ 254	0	(224,232)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	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. 02, 2021	25,390	25,390
Beginning balance at Jan. 02, 2021	$ (223,978)	$ 254	0	(224,232)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 142,605
Ending balance (in shares) at Oct. 02, 2021	22,647	22,647
Ending balance at Oct. 02, 2021	$ (440,066)	$ 226	0	(440,292)
Beginning balance (in shares) at Apr. 03, 2021		24,464
Beginning balance at Apr. 03, 2021	(332,650)	$ 245	0	(332,895)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	22,250			22,250
Exercise of common stock options (in shares)		35
Exercise of common stock options	1,075		1,075
Stock-based compensation (in shares)		22
Stock-based compensation	5,969		5,969
Repurchases of common stock (in shares)		(899)
Repurchases of common stock	(100,302)	$ (9)	(7,044)	(93,249)
Ending balance (in shares) at Jul. 03, 2021		23,622
Ending balance at Jul. 03, 2021	(403,658)	$ 236	0	(403,894)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	53,721			53,721
Exercise of common stock options (in shares)		10
Exercise of common stock options	312	$ 0	312
Stock-based compensation (in shares)		19
Stock-based compensation	7,316		7,316
Repurchases of common stock (in shares)		(1,004)
Repurchases of common stock	$ (97,757)	$ (10)	(7,628)	(90,119)
Ending balance (in shares) at Oct. 02, 2021	22,647	22,647
Ending balance at Oct. 02, 2021	$ (440,066)	$ 226	$ 0	$ (440,292)