Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Income for the Pension Plans

Net periodic benefit income from our pension plans included the following components for our pension benefits:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2022		2021		2022		2021
Service cost	$	2,532	$	3,043	$	7,734	$	9,185
Interest cost	18,804		17,915		56,520		53,783
Expected return on plan assets	(37,569)		(38,755)		(112,887)		(116,345)
Amortization of prior service cost	172		172		516		516
Amortization of actuarial loss	9,264		12,465		27,818		37,430
Net periodic benefit income	$	(6,797)	$	(5,160)	$	(20,299)	$	(15,431)