Pensions and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The composition of the net periodic benefit cost for the six months ended June 30, 2022 and 2021, was as follows:

	Pension plans				Other postretirement benefits
(in thousands)	2022		2021		2022		2021
Components of net periodic benefit cost:
Service cost	$	708	$	1,090	$	57	$	66
Interest cost	2,828		2,674		611		551
Expected return on assets	(3,405)		(3,211)		—		—
Amortization of prior service cost/(credit)	(1)		7		(2,244)		(2,244)
Amortization of net actuarial loss	997		1,087		941		1,130
Net periodic benefit cost	$	1,127	$	1,647	$	(635)	$	(497)