Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	$ 266	$ 330	$ 516	$ 660
Net earnings (loss)	11,856	(100)	19,840	185
Foreign currency translation adjustments and other	1,719	8,295	17,232	(2,531)
Change in pension and post-retirement benefit plan liabilities, net of tax expense of $266 and $330 and $516 and $660, respectively	899	1,107	1,741	2,214
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	2,618	9,402	18,973	(317)
Comprehensive income (loss)	$ 14,474	$ 9,302	$ 38,813	$ (132)