Retirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The following tables provide the components of net periodic benefit costs for the three-month periods ended March 31, 2023 and 2022:

	Employees'		Select Executive		Postretirement
	Pension		Retirement		Benefit
	Plan		Plan		Plans
Net Periodic Cost
For the Three Months Ended March 31, 2023:
Service Cost 1	$	413	$	163	$	18
Interest Cost 2	530		62		87
Expected Return on Plan Assets 2	(857)		—		—
Amortization of Prior Service Cost 2	16		10		26
Amortization of Net Loss (Gain) 2	36		18		(79)
Net Periodic Cost	$	138	$	253	$	52
Plan Contributions During the Period	$	—	$	116	$	27
For the Three Months Ended March 31, 2022:
Service Cost 1	$	488	$	147	$	27
Interest Cost 2	367		51		64
Expected Return on Plan Assets 2	(1,099)		—		—
Amortization of Prior Service Cost 2	19		11		27
Amortization of Net Loss (Gain) 2	—		39		(32)
Net Periodic (Benefit) Cost	$	(225)	$	248	$	86
Plan Contributions During the Period	$	—	$	116	$	55
Estimated Future Contributions in the Current Fiscal Year	$	—	$	154	$	81

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