Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2025

The following tables provide the components of net periodic benefit costs for the three and nine-month periods ended September 30, 2025 and 2024:


	Employees'		Select Executive		Postretirement
	Pension		Retirement		Benefit
	Plan		Plan		Plans
Net Periodic Benefit Cost (Benefit)
For the Three Months Ended September 30, 2025:
Service Cost 1	$	400	$	23	$	7
Interest Cost 2	582		76		71
Expected Return on Plan Assets 2	(992)		—		—
Amortization of Prior Service Cost 2	47		9		26
Amortization of Net (Gain) 2	—		—		(128)
Net Periodic Cost (Benefit)	$	37	$	108	$	(24)

Plan Contributions During the Period	$	—	$	100	$	32

For the Three Months Ended September 30, 2024:
Service Cost 1	$	423	$	20	$	11
Interest Cost 2	562		(157)		79
Expected Return on Plan Assets 2	(928)		237		—
Amortization of Prior Service Cost 2	32		9		26
Amortization of Net (Gain) 2	—		6		(84)
Net Periodic Cost	$	89	$	115	$	32

Plan Contributions During the Period	$	—	$	127	$	31


Net Periodic Benefit Cost
For the Nine Months Ended September 30, 2025:
Service Cost 1	$	1,202	$	70	$	23
Interest Cost 2	1,743		224		210
Expected Return on Plan Assets 2	(2,978)		—		—
Amortization of Prior Service Cost 2	142		29		77
Amortization of Net (Gain) 2	—		—		(383)
Net Periodic Cost (Benefit)	$	109	$	323	$	(73)

Plan Contributions During the Period	$	—	$	348	$	123

Estimated Future Contributions in the Current Fiscal Year	$	—	$	116	$	41

For the Nine Months Ended September 30, 2024:
Service Cost 1	$	1,269	$	59	$	34
Interest Cost 2	1,682		3		239
Expected Return on Plan Assets 2	(2,783)		237		—
Amortization of Prior Service Cost 2	98		29		77
Amortization of Net Loss (Gain) 2	—		18		(253)
Net Periodic Cost	$	266	$	346	$	97

Plan Contributions During the Period	$	—	$	382	$	112

Footnotes:

1. Included in Salaries and Employee Benefits on the Consolidated Statements of Income

2. Included in Other Operating Expense on the Consolidated Statements of Income