Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2023

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, 2023 and 2022.

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)		2023		2022		2023		2022
Company service cost		$	—	$	1,869	$	362	$	306
Interest cost		3,299		2,848		418		171
Expected return on plan assets		(3,425)		(4,864)		(2,054)		(2,626)
Amortization of:
Net actuarial losses (gains)		530		1,349		(11)		(798)
Prior service cost (credit)		86		(53)		466		122
Cost of settlements and curtailments		1,000		—		—		—
Net periodic benefit cost (benefit)		$	1,490	$	1,149	$	(819)	$	(2,825)
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)		2023		2022		2023		2022
Company service cost		$	—	$	3,626	$	748	$	654
Interest cost		6,981		5,725		816		348
Expected return on plan assets		(7,006)		(9,816)		(4,117)		(5,251)
Amortization of:
Net actuarial losses (gains)		1,127		2,532		(75)		(1,552)
Prior service cost (credit)		172		(106)		931		244
Cost of settlements and curtailments		8,847		—		—		—
Net periodic benefit cost (benefit)		$	10,121	$	1,961	$	(1,697)	$	(5,557)