CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 99,562	$ 48,180	$ 192,952	$ 101,543
Defined benefit plans reclassification including pension costs:
Actuarial gain	745	913	1,491	1,829
Prior service credits	0	0	0	1
Postretirement benefits reclassification including benefit costs:
Actuarial gain	69	139	138	279
Interest rate swap	0	244	0	556
Foreign currency translation adjustment	0	28	0	(9)
Other comprehensive income, net of tax	814	1,324	1,629	2,656
Comprehensive income	$ 100,376	$ 49,504	$ 194,581	$ 104,199