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Loans - Aging Analysis of Past Due Loan Receivables (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Loans [Abstract] |  |
Total past due | $ 2,335,388 | $ 2,313,242
Total past due and non-accrual | 20,523 | 25,701
Total past due and still accruing | 2,314,865 | 2,287,541
30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 12,319 | 8,245
Total past due and non-accrual | 797 | 2,428
Total past due and still accruing | 11,522 | 5,817
60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 1,989 | 2,199
Total past due and non-accrual | 283 | 0
Total past due and still accruing | 1,706 | 2,199
90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 14,387 | 13,754
Total past due and non-accrual | 14,350 | 13,478
Total past due and still accruing | 37 | 276
Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 28,695 | 24,198
Total past due and non-accrual | 15,430 | 15,906
Total past due and still accruing | 13,265 | 8,292
Current [Member] |  |
Loans [Abstract] |  |
Total past due | 2,306,693 | 2,289,044
Total past due and non-accrual | 5,093 | 9,795
Total past due and still accruing | 2,301,600 | 2,279,249
Home Equity [Member] |  |
Loans [Abstract] |  |
Total past due | 51,425 | 49,663
Commercial [Member] |  |
Loans [Abstract] |  |
Total past due | 1,180,655 | 1,121,435
Construction [Member] |  |
Loans [Abstract] |  |
Total past due | 107,867 | 164,326
Real Estate Loans [Member] | Mortgages [Member] |  |
Loans [Abstract] |  |
Total past due | 293,365 | 301,735
Real Estate Loans [Member] | Mortgages [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 1,831 | 1,464
Real Estate Loans [Member] | Mortgages [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 866 | 227
Real Estate Loans [Member] | Mortgages [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 1,722 | 1,605
Real Estate Loans [Member] | Mortgages [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 4,419 | 3,296
Real Estate Loans [Member] | Mortgages [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 288,946 | 298,439
Real Estate Loans [Member] | Home Equity [Member] |  |
Loans [Abstract] |  |
Total past due | 51,425 | 49,663
Real Estate Loans [Member] | Home Equity [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 293 | 138
Real Estate Loans [Member] | Home Equity [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 86 | 170
Real Estate Loans [Member] | Home Equity [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 33 | 148
Real Estate Loans [Member] | Home Equity [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 412 | 456
Real Estate Loans [Member] | Home Equity [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 51,013 | 49,207
Real Estate Loans [Member] | Commercial [Member] |  |
Loans [Abstract] |  |
Total past due | 1,180,655 | 1,121,435
Real Estate Loans [Member] | Commercial [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 2,660 | 2,782
Real Estate Loans [Member] | Commercial [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 384 | 1,360
Real Estate Loans [Member] | Commercial [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 7,411 | 6,528
Real Estate Loans [Member] | Commercial [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 10,455 | 10,670
Real Estate Loans [Member] | Commercial [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 1,170,200 | 1,110,765
Real Estate Loans [Member] | Agricultural [Member] |  |
Loans [Abstract] |  |
Total past due | 342,487 | 327,722
Real Estate Loans [Member] | Agricultural [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 1,206 | 1,569
Real Estate Loans [Member] | Agricultural [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 225 | 140
Real Estate Loans [Member] | Agricultural [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 1,927 | 1,845
Real Estate Loans [Member] | Agricultural [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 3,358 | 3,554
Real Estate Loans [Member] | Agricultural [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 339,129 | 324,168
Real Estate Loans [Member] | Construction [Member] |  |
Loans [Abstract] |  |
Total past due | 107,867 | 164,326
Real Estate Loans [Member] | Construction [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 239 | 1,119
Real Estate Loans [Member] | Construction [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 0 | 0
Real Estate Loans [Member] | Construction [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 283 | 283
Real Estate Loans [Member] | Construction [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 522 | 1,402
Real Estate Loans [Member] | Construction [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 107,345 | 162,924
Consumer [Member] |  |
Loans [Abstract] |  |
Total past due | 109,458 | 109,505
Consumer [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 242 | 292
Consumer [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 239 | 20
Consumer [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 792 | 1,009
Consumer [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 1,273 | 1,321
Consumer [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 108,185 | 108,184
Other Commercial Loans [Member] |  |
Loans [Abstract] |  |
Total past due | 171,345 | 155,012
Other Commercial Loans [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 5,848 | 478
Other Commercial Loans [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 184 | 282
Other Commercial Loans [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 1,816 | 2,336
Other Commercial Loans [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 7,848 | 3,096
Other Commercial Loans [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 163,497 | 151,916
Other Agricultural Loans [Member] |  |
Loans [Abstract] |  |
Total past due | 27,142 | 29,662
Other Agricultural Loans [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 0 | 403
Other Agricultural Loans [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 5 | 0
Other Agricultural Loans [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 403 | 0
Other Agricultural Loans [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 408 | 403
Other Agricultural Loans [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | 26,734 | 29,259
State and Political Subdivision Loans [Member] |  |
Loans [Abstract] |  |
Total past due | 51,644 | 54,182
State and Political Subdivision Loans [Member] | 30 to 59 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 0 | 0
State and Political Subdivision Loans [Member] | 60 to 89 Days Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 0 | 0
State and Political Subdivision Loans [Member] | 90 Days Or Greater [Member] |  |
Loans [Abstract] |  |
Total past due | 0 | 0
State and Political Subdivision Loans [Member] | Total Past Due [Member] |  |
Loans [Abstract] |  |
Total past due | 0 | 0
State and Political Subdivision Loans [Member] | Current [Member] |  |
Loans [Abstract] |  |
Total past due | $ 51,644 | $ 54,182

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