CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - 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]
Consolidated net income		$ 11,664	$ 11,660	$ 22,974	$ 23,607
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	[1]	136	1,498	(353)	(5,308)
Pension liability adjustments, net of tax	[2]	262	100	383	837
Total other comprehensive income (loss)		398	1,598	30	(4,471)
Total consolidated comprehensive income		$ 12,062	$ 13,258	$ 23,004	$ 19,136

[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 3 for the total amount of pension liability adjustments reclassified out of accumulated other comprehensive income (loss).