Supplemental Compensation Plans, Assumptions Used to Determine Benefit Obligations (Details) - Pension Plan [Member]	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Salary Continuation Plan and SERP [Member]
Assumptions used to determine benefit obligations [Abstract]
Discount rate used to determine net periodic benefit cost for years ended	5.30%	5.00%
Discount rate used to determine benefit obligations	5.50%	5.30%
Future salary increases	5.30%	5.60%
Directors' Retirement Plan [Member]
Assumptions used to determine benefit obligations [Abstract]
Discount rate used to determine net periodic benefit cost for years ended	5.00%	4.60%
Discount rate used to determine benefit obligations	5.10%	5.00%