Pension and Postretirement Benefit Obligations (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Components of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost

The components of net periodic pension cost were as follows:

	First Quarter
(in thousands)	2023		2022
Service cost	$	1,099	$	1,860
Interest cost	3,508		2,659
Expected return on plan assets	(2,914)		(2,035)
Recognized net actuarial loss	973		989
Amortization of prior service cost	4		—
Net periodic pension cost	$	2,670	$	3,473

The components of net periodic postretirement benefit cost were as follows:

	First Quarter
(in thousands)	2023		2022
Service cost	$	294	$	383
Interest cost	698		474
Recognized net actuarial loss	—		92
Net periodic postretirement benefit cost	$	992	$	949