CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Jan. 01, 2021	Jan. 03, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 24,501	$ 5,913	$ 14,048
Defined benefit plans:
Net change in plan assets	2,632	(3,639)	(2,265)
Reclassification into other income (expense), net	487	283	107
Foreign currency translation gain (loss)	(1,776)	717	291
Tax effect	154	142	139
Other comprehensive income (loss), net of tax	1,497	(2,497)	(1,728)
Comprehensive income	$ 25,998	$ 3,416	$ 12,320