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	$ 23,607			23,607
Common shares issued under stock plans	$ 179		179
Common shares issued under stock plans (in shares)	256
Common shares withheld for taxes on vested stock awards	$ (7,936)		(7,936)
Common shares withheld for taxes on vested stock awards (in shares)	(88)
Repurchases of common shares	$ (5,500)		(5,500)
Repurchases of common shares (in shares)	(65)
Share-based compensation	$ 8,847		8,847
Other comprehensive income (loss), net of tax	(4,471)				(4,471)
Balance at Jul. 03, 2020	$ 431,898	423,856	45,338	(14,712)	(22,584)
Balance (in shares) at Jul. 03, 2020	35,155
Balance at Apr. 03, 2020	$ 413,103	423,856	39,801	(26,372)	(24,182)
Balance (in shares) at Apr. 03, 2020	35,122
Consolidated net income	$ 11,660			11,660
Common shares issued under stock plans (in shares)	34
Common shares withheld for taxes on vested stock awards	$ (111)		(111)
Common shares withheld for taxes on vested stock awards (in shares)	(1)
Share-based compensation	$ 5,648		5,648
Other comprehensive income (loss), net of tax	1,598				1,598
Balance at Jul. 03, 2020	$ 431,898	423,856	45,338	(14,712)	(22,584)
Balance (in shares) at Jul. 03, 2020	35,155
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	$ 22,974			22,974
Common shares issued under stock plans (in shares)	460
Common shares withheld for taxes on vested stock awards	$ (18,428)		(18,428)
Common shares withheld for taxes on vested stock awards (in shares)	(134)
Share-based compensation	$ 11,679		11,679
Other comprehensive income (loss), net of tax	30				30
Balance at Jul. 02, 2021	$ 493,064	423,856	52,243	29,176	(12,211)
Balance (in shares) at Jul. 02, 2021	35,489
Balance at Apr. 02, 2021	$ 476,123	423,856	47,364	17,512	(12,609)
Balance (in shares) at Apr. 02, 2021	35,384
Consolidated net income	$ 11,664			11,664
Common shares issued under stock plans (in shares)	106
Common shares withheld for taxes on vested stock awards	$ (156)		(156)
Common shares withheld for taxes on vested stock awards (in shares)	(1)
Share-based compensation	$ 5,035		5,035
Other comprehensive income (loss), net of tax	398				398
Balance at Jul. 02, 2021	$ 493,064	$ 423,856	$ 52,243	$ 29,176	$ (12,211)
Balance (in shares) at Jul. 02, 2021	35,489