Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 24,574	$ 18,084	$ 80,822	$ 60,712
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(266)	550	(55)	(1,052)
Unrealized losses on available- for-sale investment securities arising during the period, net of tax		(129)	(65)	(172)
Comprehensive income	$ 24,308	$ 18,505	$ 80,702	$ 59,488