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Loans - Loan Receivables on Nonaccrual Status (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Loans [Abstract] |  |
Nonaccrual With a related allowance | $ 2,134 | $ 5,648
Nonaccrual Without a related allowance | 18,390 | 20,053
90 days or greater past due and accruing | 37 | 276
Total non-performing loans | 20,561 | 25,977
Real Estate Loans [Member] | Mortgages [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 450 | 165
Nonaccrual Without a related allowance | 3,511 | 2,541
90 days or greater past due and accruing | 0 | 0
Total non-performing loans | 3,961 | 2,706
Real Estate Loans [Member] | Home Equity [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 0 | 0
Nonaccrual Without a related allowance | 62 | 165
90 days or greater past due and accruing | 3 | 0
Total non-performing loans | 65 | 165
Real Estate Loans [Member] | Commercial [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 109 | 2,099
Nonaccrual Without a related allowance | 9,402 | 12,265
90 days or greater past due and accruing | 3 | 0
Total non-performing loans | 9,514 | 14,364
Real Estate Loans [Member] | Agricultural [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 0 | 0
Nonaccrual Without a related allowance | 2,151 | 4,062
90 days or greater past due and accruing | 0 | 269
Total non-performing loans | 2,151 | 4,331
Real Estate Loans [Member] | Construction [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 239 | 0
Nonaccrual Without a related allowance | 1,313 | 283
90 days or greater past due and accruing | 0 | 0
Total non-performing loans | 1,552 | 283
Consumer [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 778 | 1,002
Nonaccrual Without a related allowance | 0 | 0
90 days or greater past due and accruing | 14 | 7
Total non-performing loans | 792 | 1,009
Other Commercial Loans [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 558 | 2,382
Nonaccrual Without a related allowance | 1,548 | 200
90 days or greater past due and accruing | 17 | 0
Total non-performing loans | 2,123 | 2,582
Other Agricultural Loans [Member] |  |
Loans [Abstract] |  |
Nonaccrual With a related allowance | 0 | 0
Nonaccrual Without a related allowance | 403 | 537
90 days or greater past due and accruing | 0 | 0
Total non-performing loans | $ 403 | $ 537

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