Employee Retirement Plans (Tables)

9 Months Ended

Oct. 02, 2021

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
	Oct 2, 2021		Sep 26, 2020		Oct 2, 2021		Sep 26, 2020
Net Periodic Pension Benefit:
Service cost	$	194	$	649	$	584	$	1,918
Interest cost	4,287		6,456		12,927		19,086
Expected return on assets	(19,516)		(18,089)		(58,851)		(53,476)
Amortization of net loss (gain)	3,150		842		9,498		2,489
Amortization of prior service cost (credit)	716		642		2,158		1,897
	$	(11,169)	$	(9,500)	$	(33,684)	$	(28,086)