Pension and Other Postretirement Employee Benefits

6 Months Ended

Jun. 30, 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 June 30,
	Pension						OPEB
(in thousands)	2024			2023			2024			2023
Service cost	$	1,322		$	1,355		$	24		$	28
Interest cost		3,122			3,137			219			293
Expected return on plan assets		(3,237	)		(3,025	)		—			—
Amortization of prior service cost		5			11			—			—
Amortization of actuarial (gain) loss		20			(21	)		(330	)		(166	)
Total net periodic cost	$	1,232		$	1,457		$	(87	)	$	155

	Six Months Ended June 30,
	Pension						OPEB
(in thousands)	2024			2023			2024			2023
Service cost	$	2,643		$	2,711		$	47		$	55
Interest cost		6,245			6,275			438			587
Expected return on plan assets		(6,474	)		(6,053	)		—			—
Amortization of prior service cost		10			22			—			—
Amortization of actuarial (gain) loss		40			(42	)		(661	)		(332	)
Net periodic cost	$	2,464		$	2,913		$	(176	)	$	310

During the six months ended June 30, 2024 and 2023, funding of pension and other postretirement employee benefit plans was $2.1 million and $2.3 million, respectively.