CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 26,620	$ 1,056
Other comprehensive income (loss), before tax
Change in unrealized net gain on available-for-sale investments	(68)	(5)
Foreign currency translation gains	6	221
Other comprehensive income (loss), before tax	(62)	216
Income tax expense related to items in other comprehensive income (loss)	0	0
Other comprehensive income (loss), net of tax	(62)	216
Comprehensive income	$ 26,558	$ 1,272