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Loans - Amortized Cost Basis of Collateral-Dependent Nonaccrual Loans and Leases (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | $ 20,524 | $ 25,701
Real Estate Loans [Member] | Mortgages [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 3,961 | 2,706
Real Estate Loans [Member] | Home Equity [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 62 | 165
Real Estate Loans [Member] | Commercial [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 9,511 | 14,364
Real Estate Loans [Member] | Agricultural [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 2,151 | 4,062
Real Estate Loans [Member] | Construction [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 1,552 | 283
Consumer [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 778 | 1,002
Other Commercial Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 2,106 | 2,582
Other Agricultural Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 403 | 537
Real Estate [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 17,237 | 21,580
Real Estate [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 3,961 | 2,706
Real Estate [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 62 | 165
Real Estate [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 9,511 | 14,364
Real Estate [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 2,151 | 4,062
Real Estate [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 1,552 | 283
Real Estate [Member] | Consumer [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Real Estate [Member] | Other Commercial Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Real Estate [Member] | Other Agricultural Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 2,509 | 3,119
Business Assets [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] | Consumer [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
Business Assets [Member] | Other Commercial Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 2,106 | 2,582
Business Assets [Member] | Other Agricultural Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 403 | 537
None [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 778 | 1,002
None [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
None [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
None [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
None [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
None [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
None [Member] | Consumer [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 778 | 1,002
None [Member] | Other Commercial Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | 0 | 0
None [Member] | Other Agricultural Loans [Member] |  |
Loans [Abstract] |  |
Financing Receivable, Nonaccrual | $ 0 | $ 0

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