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Loans and ACL (Summary of Loan Modifications by Past Due Status) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | --- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | $ 8,202 |  |  |  | $ 1,331
Financing Receivable, Allowance for Credit Loss, Percent | 0.89% | 0.95% | 0.98% | 0.97% | 0.96%
Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | $ 8,202 |  |  |  | $ 1,331
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Commercial and Industrial, Secured, Portfolio Segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,937 |  |  |  |
Commercial and Industrial, Secured, Portfolio Segment | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,937 |  |  |  |
Commercial and Industrial, Secured, Portfolio Segment | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial and Industrial, Secured, Portfolio Segment | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial and Industrial, Secured, Portfolio Segment | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial Real Estate, Owner Occupied, Portfolio Segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 823 |  |  |  |
Commercial Real Estate, Owner Occupied, Portfolio Segment | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 823 |  |  |  |
Commercial Real Estate, Owner Occupied, Portfolio Segment | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial Real Estate, Owner Occupied, Portfolio Segment | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial Real Estate, Owner Occupied, Portfolio Segment | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial Real Estate, Non-owner Occupied |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 1,034
Commercial Real Estate, Non-owner Occupied | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 1,034
Commercial Real Estate, Non-owner Occupied | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 0
Commercial Real Estate, Non-owner Occupied | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 0
Commercial Real Estate, Non-owner Occupied | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 0
Commercial Real Estate, Multifamily, Portfolio Segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 2,917 |  |  |  |
Commercial Real Estate, Multifamily, Portfolio Segment | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 2,917 |  |  |  |
Commercial Real Estate, Multifamily, Portfolio Segment | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial Real Estate, Multifamily, Portfolio Segment | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Commercial Real Estate, Multifamily, Portfolio Segment | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Agricultural Mortgage, Portfolio Segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,305 |  |  |  | 258
Agricultural Mortgage, Portfolio Segment | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,305 |  |  |  | 258
Agricultural Mortgage, Portfolio Segment | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Agricultural Mortgage, Portfolio Segment | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Agricultural Mortgage, Portfolio Segment | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Agricultural Other Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,219 |  |  |  | 34
Agricultural Other Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,219 |  |  |  | 34
Agricultural Other Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Agricultural Other Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Agricultural Other Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  | 0
Residential Real Estate, Senior Lien, Portfolio Segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 5
Residential Real Estate, Senior Lien, Portfolio Segment | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 5
Residential Real Estate, Senior Lien, Portfolio Segment | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 0
Residential Real Estate, Senior Lien, Portfolio Segment | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | 0
Residential Real Estate, Senior Lien, Portfolio Segment | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months |  |  |  |  | $ 0
Consumer, Secured, Indirect, Portfolio Segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1 |  |  |  |
Consumer, Secured, Indirect, Portfolio Segment | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1 |  |  |  |
Consumer, Secured, Indirect, Portfolio Segment | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Consumer, Secured, Indirect, Portfolio Segment | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 |  |  |  |
Consumer, Secured, Indirect, Portfolio Segment | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | $ 0 |  |  |  |

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