Pension and Other Postretirement Employee Benefits

6 Months Ended

Jun. 30, 2025

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 benefit plans (OPEB):

	Three Months Ended June 30,
	Pension						OPEB
(in thousands)	2025			2024			2025			2024
Service cost	$	1,267		$	1,322		$	14		$	24
Interest cost		3,230			3,122			251			219
Expected return on plan assets		(2,933	)		(3,237	)		—			—
Amortization of prior service cost		—			5			—			—
Amortization of actuarial (gain) loss		43			20			(240	)		(330	)
Total net periodic cost	$	1,607		$	1,232		$	25		$	(87	)

	Six Months Ended June 30,
	Pension						OPEB
(in thousands)	2025			2024			2025			2024
Service cost	$	2,533		$	2,643		$	28		$	47
Interest cost		6,458			6,245			503			438
Expected return on plan assets		(5,865	)		(6,474	)		—			—
Amortization of prior service cost		—			10			—			—
Amortization of actuarial (gain) loss		86			40			(480	)		(661	)
Net periodic cost	$	3,212		$	2,464		$	51		$	(176	)

Funding of our non-qualified pension and other postretirement employee benefit plans was $2.0 million and $2.1 million for the six months ended June 30, 2025 and 2024, respectively. During the six months ended June 30, 2025 and 2024, we made contributions to our qualified pension benefit plan of $2.6 million and $0, respectively.