Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 25,400	$ 16,346	$ 56,248	$ 42,628
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(32)	71	211	(1,602)
Unrealized losses on available- for-sale investment securities arising during the period, net of tax	(61)	(211)	(65)	(43)
Comprehensive income	$ 25,307	$ 16,206	$ 56,394	$ 40,983