Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

Components of net periodic benefit cost

Tables 10.1 and 10.2 provide the components of net periodic benefit cost for our pension, supplemental executive retirement and other postretirement benefit plans for the three and six months ended June 30, 2024 and 2023.

Components of net periodic benefit cost
Table	10.1
		Three Months Ended June 30,
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefit Plans
(In thousands)		2024		2023		2024		2023
Company service cost		$	—	$	—	$	417	$	362
Interest cost		3,247		3,299		375		418
Expected return on plan assets		(3,644)		(3,425)		(2,494)		(2,054)
Amortization of:
Net actuarial losses (gains)		523		530		(380)		(11)
Prior service cost (credit)		86		86		453		466
Cost of settlements and curtailments		—		1,000		—		—
Net periodic benefit cost (benefit)		$	212	$	1,490	$	(1,629)	$	(819)
Components of net periodic benefit cost
Table	10.2
		Six Months Ended June 30,
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefit Plans
(In thousands)		2024		2023		2024		2023
Company service cost		$	—	$	—	$	834	$	748
Interest cost		6,494		6,981		750		816
Expected return on plan assets		(7,288)		(7,006)		(4,988)		(4,117)
Amortization of:
Net actuarial losses (gains)		1,046		1,127		(760)		(75)
Prior service cost (credit)		172		172		906		931
Cost of settlements and curtailments		—		8,847		—		—
Net periodic benefit cost (benefit)		$	424	$	10,121	$	(3,258)	$	(1,697)