Pensions and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The composition of the net periodic benefit cost/ (income) for the six months ended June 30, 2023 and 2022, was as follows:

	Pension plans				Other postretirement benefits
(in thousands)	2023		2022		2023		2022
Components of net periodic benefit cost/(income):
Service cost	$	565	$	708	$	30	$	57
Interest cost	2,141		2,828		937		611
Expected return on assets	(1,955)		(3,405)		—		—
Amortization of prior service cost/(income)	(16)		(1)		(2,045)		(2,244)
Amortization of net actuarial loss	279		997		414		941
Net periodic benefit cost/(income)	$	1,014	$	1,127	$	(664)	$	(635)