Employee Benefit Plans

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Employee Benefit Plans

We sponsor and/or contribute to pension and postretirement health care and life insurance benefit plans for eligible employees. Net periodic benefit cost (credit) for our pension and other postretirement plans consists of the following (in thousands):

	Pension Benefits				Other Postretirement Benefits
	Three Months Ended September 30,				Three Months Ended September 30,
	2022		2021		2022		2021
Components of Net Periodic Benefit Cost (Credit)
Service cost	$	2,555	$	3,275	$	88	$	103
Interest cost	4,697		4,704		90		79
Expected return on plan assets	(6,043)		(6,841)		(262)		(230)
Amortization of prior service credit	—		—		(472)		(459)
Recognized actuarial loss (gain)	96		1,744		(13)		(8)
Net periodic benefit cost (credit)	$	1,305	$	2,882	$	(569)	$	(515)

	Pension Benefits				Other Postretirement Benefits
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Components of Net Periodic Benefit Cost (Credit)
Service cost	$	7,667	$	9,824	$	263	$	306
Interest cost	14,090		14,114		269		238
Expected return on plan assets	(18,129)		(20,525)		(785)		(689)
Amortization of prior service credit	—		—		(1,418)		(1,377)
Recognized actuarial loss (gain)	287		5,233		(37)		(23)
Net periodic benefit cost (credit)	$	3,915	$	8,646	$	(1,708)	$	(1,545)

We have contributed $8.2 million to our pension plans during the nine months ended September 30, 2022. We expect to contribute $3.0 million to our pension plans during the remainder of 2022.