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Loans, Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Real Estate Mortgage [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate |  |  |  | 3.00% |
Interest Rate Reduction [Member] | Commercial Real Estate Residential [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate, pre-modification |  | 9.50% |  | 9.50% | 9.50%
Weighted-average contractual interest rate, post-modification |  | 7.50% |  | 7.80% | 7.80%
Interest Rate Reduction [Member] | Commercial Real Estate Nonresidential [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate, pre-modification |  |  |  | 9.50% | 9.50%
Weighted-average contractual interest rate, post-modification |  |  |  | 7.50% | 7.50%
Interest Rate Reduction [Member] | Real Estate Mortgage [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate, pre-modification | 6.20% |  | 7.80% |  | 7.00%
Weighted-average contractual interest rate, post-modification | 3.30% |  | 4.70% |  | 4.40%
Term Extension [Member] | Commercial Real Estate Residential [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased |  | 2 years | 3 months 18 days | 7 months 6 days | 6 months
Term Extension [Member] | Commercial Real Estate Nonresidential [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased |  | 2 months 12 days |  | 1 month 6 days | 1 month 6 days
Term Extension [Member] | Commercial Other [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased | 3 months 18 days | 9 months 18 days | 3 months 18 days | 1 year 4 months 24 days | 3 years
Term Extension [Member] | Real Estate Mortgage [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased | 1 year 4 months 24 days | 1 year | 9 months 18 days | 2 years 3 months 18 days | 2 years 9 months 18 days
Term Extension [Member] | Home Equity Lines [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased |  | 4 years 10 months 24 days | 6 months | 5 years 9 months 18 days | 6 years 1 month 6 days
Term Extension [Member] | Consumer Direct [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased | 2 months 12 days |  | 1 month 6 days |  |
Weighted-average term decreased |  |  |  | 8 months 12 days | 9 months 18 days
Term Extension [Member] | Consumer Indirect [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average term increased |  |  | 3 months 18 days | 3 months 18 days | 3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Real Estate Residential [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate |  |  | 8.50% |  |
Weighted-average contractual interest rate, pre-modification |  |  |  | 10.80% |
Weighted-average contractual interest rate, post-modification |  |  |  | 6.50% |
Weighted-average term increased |  |  | 4 years | 3 months 18 days |
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Real Estate Nonresidential [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate, pre-modification |  |  | 6.00% |  |
Weighted-average contractual interest rate, post-modification |  |  | 8.50% |  |
Weighted-average term increased |  |  | 10 years 3 months 18 days |  |
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Other [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate, pre-modification | 4.00% |  | 4.30% |  | 12.80%
Weighted-average contractual interest rate, post-modification | 8.50% |  | 8.50% |  | 11.30%
Weighted-average term increased | 15 years |  | 14 years 3 months 18 days |  | 2 years 10 months 24 days
Combination - Term Extension and Interest Rate Reduction [Member] | Real Estate Mortgage [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate | 8.50% |  |  |  |
Weighted-average contractual interest rate, pre-modification |  | 5.80% | 5.60% | 6.30% | 6.30%
Weighted-average contractual interest rate, post-modification |  | 5.70% | 4.20% | 5.90% | 5.80%
Weighted-average term increased | 20 years | 13 years 1 month 6 days | 4 years 3 months 18 days | 12 years 4 months 24 days | 12 years 2 months 12 days
Combination - Term Extension and Interest Rate Reduction [Member] | Home Equity Lines [Member] |  |  |  |  |
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract] |  |  |  |  |
Weighted-average contractual interest rate, pre-modification | 5.40% | 9.90% | 9.30% | 9.40% | 9.40%
Weighted-average contractual interest rate, post-modification | 3.00% | 8.30% | 8.60% | 8.10% | 8.10%
Weighted-average term increased | 1 year 4 months 24 days | 8 years 2 months 12 days | 13 years 1 month 6 days | 9 years 4 months 24 days | 9 years 3 months 18 days

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