Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Summary of Net Periodic Benefit Cost

The following tables summarize the components of net periodic benefit (income) cost:

	Three months ended September 30,
	2022						2021
(In thousands)	Pension Plan		SERP		OPEB		Pension Plan		SERP		OPEB
Service cost	$	—	$	—	$	9	$	—	$	—	$	—
Interest cost	1,441		17		194		1,166		7		4
Expected return on plan assets	(3,669)		—		—		(3,595)		—		—
Amortization of actuarial loss (gain)	821		7		7		1,019		8		(20)
Net periodic benefit (income) cost	$	(1,407)	$	24	$	210	$	(1,410)	$	15	$	(16)

	Nine months ended September 30,
	2022						2021
(In thousands)	Pension Plan		SERP		Other Benefits		Pension Plan		SERP		Other Benefits
Service cost	$	—	$	—	$	24	$	—	$	—	$	—
Interest cost	4,198		49		551		3,498		20		12
Expected return on plan assets	(11,006)		—		—		(10,786)		—		—
Amortization of actuarial loss (gain)	1,667		20		(30)		3,058		25		(60)
Net periodic benefit (income) cost	$	(5,141)	$	69	$	545	$	(4,230)	$	45	$	(48)