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Loans and Allowance for Credit Losses - Allowance for Credit Losses Based on Portfolio Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance $ 59,093 $ 54,655 $ 41,910
Initial allowance on loans purchased with credit deterioration 3,791 863 2,074
Provision for credit loss expense 6,104 4,806 15,151
Loans charged off 2,631 2,950 5,634
Recoveries collected 2,318 1,719 1,154
Allowance for credit losses, Ending Balance 68,675 59,093 54,655
Construction and Land Development | Real Estate Loan      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 2,250 1,743 1,666
Initial allowance on loans purchased with credit deterioration 308 272 261
Provision for credit loss expense 374 137 21
Loans charged off 14 2 205
Recoveries collected 0 100 0
Allowance for credit losses, Ending Balance 2,918 2,250 1,743
Agricultural | Real Estate Loan      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 1,433 1,257 1,084
Initial allowance on loans purchased with credit deterioration 0 0 44
Provision for credit loss expense (67) 176 129
Loans charged off 0 0 0
Recoveries collected 0 0 0
Allowance for credit losses, Ending Balance 1,366 1,433 1,257
Residential Properties | Real Estate Loan | 1-4 Family      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 3,742 2,330 2,322
Initial allowance on loans purchased with credit deterioration 124 3 328
Provision for credit loss expense 225 1,241 (160)
Loans charged off 87 191 371
Recoveries collected 216 359 211
Allowance for credit losses, Ending Balance 4,220 3,742 2,330
Commercial | Real Estate Loan      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 28,157 26,246 19,660
Initial allowance on loans purchased with credit deterioration 1,066 478 646
Provision for credit loss expense 1,755 1,462 6,415
Loans charged off 25 414 535
Recoveries collected 805 385 60
Allowance for credit losses, Ending Balance 31,758 28,157 26,246
Agricultural Loans      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 585 983 1,526
Initial allowance on loans purchased with credit deterioration 0 0 0
Provision for credit loss expense 490 (359) (544)
Loans charged off 408 93 0
Recoveries collected 38 54 1
Allowance for credit losses, Ending Balance 705 585 983
Commercial and Industrial Loans      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 20,808 19,241 13,485
Initial allowance on loans purchased with credit deterioration 2,273 94 795
Provision for credit loss expense 2,322 2,135 7,940
Loans charged off 529 870 3,118
Recoveries collected 576 208 139
Allowance for credit losses, Ending Balance 25,450 20,808 19,241
Consumer Loans      
Allowance for loan losses [Abstract]      
Allowance for credit losses, Beginning Balance 2,118 2,855 2,167
Initial allowance on loans purchased with credit deterioration 20 16 0
Provision for credit loss expense 1,005 14 1,350
Loans charged off 1,568 1,380 1,405
Recoveries collected 683 613 743
Allowance for credit losses, Ending Balance $ 2,258 $ 2,118 $ 2,855