CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Shares	Additional Paid-In Capital	Retained Earning (Deficit)	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2019	$ 417,172	$ 423,856	$ 49,748	$ (38,319)	$ (18,113)
Balance (in shares) at Dec. 31, 2019		35,052
Consolidated net income	31,865			31,865
Common shares issued under stock plans	179		179
Common shares issued under stock plans (in shares)		264
Common shares withheld for taxes on vested stock awards	(8,302)		(8,302)
Common shares withheld for taxes on vested stock awards (in shares)		(91)
Repurchases of common shares	(5,500)		(5,500)
Repurchases of common shares (in shares)		(65)
Share-based compensation	16,072		16,072
Other comprehensive income (loss), net of tax	(237)				(237)
Balance at Oct. 02, 2020	451,249	$ 423,856	52,197	(6,454)	(18,350)
Balance (in shares) at Oct. 02, 2020		35,160
Balance at Jul. 03, 2020	431,898	$ 423,856	45,338	(14,712)	(22,584)
Balance (in shares) at Jul. 03, 2020		35,155
Consolidated net income	8,258			8,258
Common shares issued under stock plans (in shares)		8
Common shares withheld for taxes on vested stock awards	(366)		(366)
Common shares withheld for taxes on vested stock awards (in shares)		(3)
Share-based compensation	7,225		7,225
Other comprehensive income (loss), net of tax	4,234				4,234
Balance at Oct. 02, 2020	451,249	$ 423,856	52,197	(6,454)	(18,350)
Balance (in shares) at Oct. 02, 2020		35,160
Balance at Dec. 31, 2020	476,809	$ 423,856	58,992	6,202	(12,241)
Balance (in shares) at Dec. 31, 2020		35,163
Consolidated net income	36,577			36,577
Common shares issued under stock plans (in shares)		658
Common shares withheld for taxes on vested stock awards	(30,672)		(30,672)
Common shares withheld for taxes on vested stock awards (in shares)		(221)
Share-based compensation	20,169		20,169
Other comprehensive income (loss), net of tax	(2,770)				(2,770)
Balance at Oct. 01, 2021	500,113	$ 423,856	48,489	42,779	(15,011)
Balance (in shares) at Oct. 01, 2021		35,600
Balance at Jul. 02, 2021	493,064	$ 423,856	52,243	29,176	(12,211)
Balance (in shares) at Jul. 02, 2021		35,489
Consolidated net income	13,603			13,603
Common shares issued under stock plans (in shares)		199
Common shares withheld for taxes on vested stock awards	(12,244)		(12,244)
Common shares withheld for taxes on vested stock awards (in shares)		(88)
Share-based compensation	8,490		8,490
Other comprehensive income (loss), net of tax	(2,800)				(2,800)
Balance at Oct. 01, 2021	$ 500,113	$ 423,856	$ 48,489	$ 42,779	$ (15,011)
Balance (in shares) at Oct. 01, 2021		35,600