CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - 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]
Consolidated net income		$ 13,603	$ 8,258	$ 36,577	$ 31,865
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	[1]	(3,248)	4,302	(3,602)	(1,006)
Pension liability adjustments, net of tax	[2]	448	(68)	832	769
Total other comprehensive income (loss)		(2,800)	4,234	(2,770)	(237)
Total consolidated comprehensive income		$ 10,803	$ 12,492	$ 33,807	$ 31,628

[1] The tax effect on this component of comprehensive income (loss) was nominal for all periods presented.

[2] The tax effect on this component of comprehensive income (loss) was nominal for all periods presented. See Note 4 for the total amount of pension liability adjustments reclassified out of accumulated other comprehensive income (loss).