Pensions and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The composition of the net periodic benefit cost/ (income) for the nine months ended September 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	$	986	$	1,061	$	45	$	86
Interest cost	3,447		4,235		1,405		916
Expected return on assets	(3,063)		(5,099)		—		—
Amortization of prior service cost/(income)	(24)		(2)		(3,068)		(3,366)
Amortization of net actuarial loss	421		1,493		621		1,412
Net periodic benefit cost/(credit)	$	1,767	$	1,688	$	(997)	$	(952)
Settlement charge	—		49,128		—		—
Net benefit cost/(credit)	$	1,767	$	50,816	$	(997)	$	(952)