Employee Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2023

Employee Retirement Plans [Abstract]

Schedule of Costs of Retirement Plans [Table Text Block]

The following table summarizes the company's net periodic pension benefit related to the AGA Group pension plans (in thousands):

	Three Months Ended				Nine Months Ended
	Sep 30, 2023		Oct 1, 2022		Sep 30, 2023		Oct 1, 2022
Net Periodic Pension Benefit:
Interest cost	11,606		5,881		$	34,220	$	18,867
Expected return on assets	(14,816)		(17,505)		(43,687)		(56,155)
Amortization of net loss	7		847		21		2,716
Amortization of prior service cost	657		611		1,939		1,960
	$	(2,546)	$	(10,166)	$	(7,507)	$	(32,612)