Pension and Other Postretirement Employee Benefits

3 Months Ended

Mar. 31, 2024

Retirement Benefits, Description [Abstract]

Pension and Other Postretirement Employee Benefits

NOTE 11. PENSION AND OTHER POSTRETIREMENT EMPLOYEE BENEFITS

The following table details the components of net periodic cost (benefit) of our pension plans and other postretirement employee benefits (OPEB):

	Three Months Ended March 31,
	Pension						OPEB
(in thousands)	2024			2023			2024			2023
Service cost	$	1,321		$	1,356		$	23		$	27
Interest cost		3,123			3,138			219			294
Expected return on plan assets		(3,237	)		(3,028	)		—			—
Amortization of prior service cost		5			11			—			—
Amortization of actuarial (gain) loss		20			(21	)		(331	)		(166	)
Total net periodic cost	$	1,232		$	1,456		$	(89	)	$	155

During the three months ended March 31, 2024 and 2023, funding of pension and other postretirement employee benefit plans was $0.9 million and $1.1 million, respectively.