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Loans and Allowance for Credit Losses - Allowance for Credit Losses Based on Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | $ 70,182 | $ 68,675 | $ 68,675
Provision (release) for credit loss expense | 1,652 | (357) | 5,635
Loans charged off | (2,083) | (819) | (5,748)
Recoveries collected | 300 | 437 | 1,620
Allowance for credit losses, Ending Balance | 70,051 | 67,936 | 70,182
Construction and Land Development | Real Estate Loan |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 3,275 | 2,918 | 2,918
Provision (release) for credit loss expense | 456 | (217) | 352
Loans charged off | 0 | 0 | 0
Recoveries collected | 0 | 0 | 5
Allowance for credit losses, Ending Balance | 3,731 | 2,701 | 3,275
Agricultural | Real Estate Loan |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 1,361 | 1,366 | 1,366
Provision (release) for credit loss expense | (69) | (8) | (5)
Loans charged off | 0 | 0 | 0
Recoveries collected | 0 | 0 | 0
Allowance for credit losses, Ending Balance | 1,292 | 1,358 | 1,361
Residential Properties | Real Estate Loan | 1-4 Family |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 3,579 | 4,220 | 4,220
Provision (release) for credit loss expense | (14) | (424) | (785)
Loans charged off | (39) | (67) | (195)
Recoveries collected | 18 | 49 | 339
Allowance for credit losses, Ending Balance | 3,544 | 3,778 | 3,579
Commercial | Real Estate Loan |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 32,669 | 31,758 | 31,758
Provision (release) for credit loss expense | (125) | 618 | 1,178
Loans charged off | (338) | 0 | (451)
Recoveries collected | 8 | 161 | 184
Allowance for credit losses, Ending Balance | 32,214 | 32,537 | 32,669
Agricultural Loans |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 1,957 | 705 | 705
Provision (release) for credit loss expense | 809 | 125 | 3,587
Loans charged off | (1,117) | (52) | (2,410)
Recoveries collected | 0 | 0 | 75
Allowance for credit losses, Ending Balance | 1,649 | 778 | 1,957
Commercial and Industrial Loans |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 25,602 | 25,450 | 25,450
Provision (release) for credit loss expense | 559 | (609) | 510
Loans charged off | (223) | (274) | (688)
Recoveries collected | 90 | 64 | 330
Allowance for credit losses, Ending Balance | 26,028 | 24,631 | 25,602
Consumer Loans |  |  |
Allowance for loan losses [Abstract] |  |  |
Allowance for credit losses, Beginning Balance | 1,739 | 2,258 | 2,258
Provision (release) for credit loss expense | 36 | 158 | 798
Loans charged off | (366) | (426) | (2,004)
Recoveries collected | 184 | 163 | 687
Allowance for credit losses, Ending Balance | $ 1,593 | $ 2,153 | $ 1,739

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