Employee Benefit Plans (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
(in thousands)	2022		2021		2022		2021
Service cost	$	2,586	$	3,101	$	5,202	$	6,142
Interest cost	18,849		17,962		37,716		35,868
Expected return on plan assets	(37,646)		(38,858)		(75,318)		(77,590)
Amortization of prior service cost	172		172		344		344
Amortization of actuarial loss	9,275		12,509		18,554		24,965
Net periodic benefit income	$	(6,764)	$	(5,114)	$	(13,502)	$	(10,271)