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Loans and Allowance for Credit Losses - Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | $ 4,759,632 | $ 4,825,874
Total Loans Receivable | 4,760,631 | 4,826,212
Total Loans> 90 Days and Accruing | 0 | 0
Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 3,291,114 | 3,319,128
Total Loans> 90 Days and Accruing | 0 | 0
Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 424,545 | 440,180
Construction and Land Development | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 159,157 | 144,264
Total Loans> 90 Days and Accruing | 0 | 0
Agricultural | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 401,957 | 410,327
Total Loans> 90 Days and Accruing | 0 | 0
Residential Properties | Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 424,545 | 440,180
Total Loans> 90 Days and Accruing | 0 | 0
Residential Properties | Real Estate Loan | Multifamily |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 301,808 | 294,346
Total Loans> 90 Days and Accruing | 0 | 0
Commercial | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 2,003,647 | 2,030,011
Total Loans> 90 Days and Accruing | 0 | 0
Agricultural Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 146,847 | 166,838
Total Loans> 90 Days and Accruing | 0 | 0
Commercial and Industrial Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 1,078,021 | 1,082,960
Total Loans> 90 Days and Accruing | 0 | 0
Consumer Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 88,430 | 97,775
Total Loans> 90 Days and Accruing | 0 | 0
All Other Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Loans Receivable | 156,219 | 159,511
Total Loans> 90 Days and Accruing | 0 | 0
Financial Asset, 30 to 59 Days Past Due |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 2,958 | 3,282
Financial Asset, 30 to 59 Days Past Due | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 2,467 | 2,240
Financial Asset, 30 to 59 Days Past Due | Construction and Land Development | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 17 | 20
Financial Asset, 30 to 59 Days Past Due | Agricultural | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 20
Financial Asset, 30 to 59 Days Past Due | Residential Properties | Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 2,182 | 1,706
Financial Asset, 30 to 59 Days Past Due | Residential Properties | Real Estate Loan | Multifamily |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Financial Asset, 30 to 59 Days Past Due | Commercial | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 268 | 494
Financial Asset, 30 to 59 Days Past Due | Agricultural Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Financial Asset, 30 to 59 Days Past Due | Commercial and Industrial Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 71 | 716
Financial Asset, 30 to 59 Days Past Due | Consumer Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 420 | 326
Financial Asset, 30 to 59 Days Past Due | All Other Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Financial Asset, 60 to 89 Days Past Due |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 210 | 1,589
Financial Asset, 60 to 89 Days Past Due | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 90 | 1,317
Financial Asset, 60 to 89 Days Past Due | Construction and Land Development | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 14
Financial Asset, 60 to 89 Days Past Due | Agricultural | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 6
Financial Asset, 60 to 89 Days Past Due | Residential Properties | Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 13 | 1,092
Financial Asset, 60 to 89 Days Past Due | Residential Properties | Real Estate Loan | Multifamily |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Financial Asset, 60 to 89 Days Past Due | Commercial | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 77 | 205
Financial Asset, 60 to 89 Days Past Due | Agricultural Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 2 | 53
Financial Asset, 60 to 89 Days Past Due | Commercial and Industrial Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 24
Financial Asset, 60 to 89 Days Past Due | Consumer Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 118 | 195
Financial Asset, 60 to 89 Days Past Due | All Other Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 6,662 | 6,709
Financial Asset, Equal to or Greater than 90 Days Past Due | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 5,057 | 5,548
Financial Asset, Equal to or Greater than 90 Days Past Due | Construction and Land Development | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 463 | 449
Financial Asset, Equal to or Greater than 90 Days Past Due | Agricultural | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 1 | 1
Financial Asset, Equal to or Greater than 90 Days Past Due | Residential Properties | Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 936 | 896
Financial Asset, Equal to or Greater than 90 Days Past Due | Residential Properties | Real Estate Loan | Multifamily |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 550 | 548
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 3,107 | 3,654
Financial Asset, Equal to or Greater than 90 Days Past Due | Agricultural Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 481 | 29
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial and Industrial Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 930 | 854
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 194 | 278
Financial Asset, Equal to or Greater than 90 Days Past Due | All Other Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Total Past Due |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 9,830 | 11,580
Total Past Due | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 7,614 | 9,105
Total Past Due | Construction and Land Development | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 480 | 483
Total Past Due | Agricultural | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 1 | 27
Total Past Due | Residential Properties | Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 3,131 | 3,694
Total Past Due | Residential Properties | Real Estate Loan | Multifamily |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 550 | 548
Total Past Due | Commercial | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 3,452 | 4,353
Total Past Due | Agricultural Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 483 | 82
Total Past Due | Commercial and Industrial Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 1,001 | 1,594
Total Past Due | Consumer Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 732 | 799
Total Past Due | All Other Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 0 | 0
Current |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 4,750,801 | 4,814,632
Current | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 3,283,500 | 3,310,023
Current | Construction and Land Development | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 158,677 | 143,781
Current | Agricultural | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 401,956 | 410,300
Current | Residential Properties | Real Estate Loan | 1-4 Family |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 421,414 | 436,486
Current | Residential Properties | Real Estate Loan | Multifamily |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 301,258 | 293,798
Current | Commercial | Real Estate Loan |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 2,000,195 | 2,025,658
Current | Agricultural Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 146,364 | 166,756
Current | Commercial and Industrial Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 1,077,020 | 1,081,366
Current | Consumer Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | 87,698 | 96,976
Current | All Other Loans |  |
Loans Receivable Aging Analysis [Abstract] |  |
Total Past Due | $ 156,219 | $ 159,511

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