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Loans and ACL (Summary of Loan Modification Effects) (Details) | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Commercial and Industrial, Secured, Portfolio Segment | Extended Maturity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Financing Receivable Modification Weighted Average Extension Term | 3 years |
Commercial Real Estate, Owner Occupied, Portfolio Segment | Payment Deferral |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Payment Deferral | 7 months |
Agricultural Mortgage, Portfolio Segment | Extended Maturity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Financing Receivable Modification Weighted Average Extension Term |  | 1 year
Agricultural Other Portfolio Segment [Member] | Extended Maturity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Financing Receivable Modification Weighted Average Extension Term |  | 1 year
Residential Real Estate, Senior Lien, Portfolio Segment | Extended Maturity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Financing Receivable Modification Weighted Average Extension Term |  | 2 years 7 months 6 days
Consumer, Secured, Indirect, Portfolio Segment | Extended Maturity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Financing Receivable Modification Weighted Average Extension Term | 1 year 3 months 18 days |

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