Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 14,667	$ (38,507)	$ 34,507	$ (38,322)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments and other	(4,342)	9,130	12,890	6,599
Change in pension and post-retirement benefit plan liabilities, net of tax expense of $257 and $330 and $773 and $990, respectively	868	1,107	2,609	3,321
Other comprehensive (loss) income	(3,474)	10,237	15,499	9,920
Comprehensive income (loss)	$ 11,193	$ (28,270)	$ 50,006	$ (28,402)