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Loans, Allowance for Loan Losses by Portfolio Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period $ 22,797 $ 21,652 $ 21,153 $ 18,552 $ 18,552
Allowance for credit loss on PCD acquired loans       1,689  
Charge-offs (1,212) (808) (2,568) (819)  
Recoveries 10 10 24 41  
Provision 100 601 3,086 5,292  
Balance at end of period 21,695 21,455 21,695 21,455 21,153
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (3,300) (3,300)
Residential [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Charge-offs     (4)   (1)
Commercial [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Charge-offs     0   0
Construction [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Charge-offs     0   0
Real Estate Loans [Member] | Residential [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 2,355 2,675 2,354 1,056 1,056
Allowance for credit loss on PCD acquired loans       108  
Charge-offs (4) 0 (4) (1)  
Recoveries 0 0 0 0  
Provision (365) (110) (364) 1,323  
Balance at end of period 1,986 2,565 1,986 2,565 2,354
Real Estate Loans [Member] | Residential [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       79 79
Real Estate Loans [Member] | Commercial [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 10,283 9,274 9,178 10,120 10,120
Allowance for credit loss on PCD acquired loans       39  
Charge-offs 0 0 0 0  
Recoveries 0 2 0 2  
Provision (996) (91) 109 2,094  
Balance at end of period 9,287 9,185 9,287 9,185 9,178
Real Estate Loans [Member] | Commercial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (3,070) (3,070)
Real Estate Loans [Member] | Agricultural [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 3,770 3,579 3,264 4,589 4,589
Allowance for credit loss on PCD acquired loans       37  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Provision 45 (104) 551 (6)  
Balance at end of period 3,815 3,475 3,815 3,475 3,264
Real Estate Loans [Member] | Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (1,145) (1,145)
Real Estate Loans [Member] | Construction [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 1,627 1,667 1,950 801 801
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Provision (156) 166 (479) 1,135  
Balance at end of period 1,471 1,833 1,471 1,833 1,950
Real Estate Loans [Member] | Construction [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (103) (103)
Consumer [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 1,211 1,259 1,496 135 135
Allowance for credit loss on PCD acquired loans       677  
Charge-offs (25) (45) (62) (55)  
Recoveries 6 3 16 30  
Provision 175 503 (83) (107)  
Balance at end of period 1,367 1,720 1,367 1,720 1,496
Consumer [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       1,040 1,040
Other Commercial Loans [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 3,256 2,477 2,229 1,040 1,040
Allowance for credit loss on PCD acquired loans       828  
Charge-offs (1,183) (763) (2,502) (763) (963)
Recoveries 4 5 8 9  
Provision (253) 353 2,089 1,286  
Balance at end of period 1,824 2,072 1,824 2,072 2,229
Other Commercial Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (328) (328)
Other Agricultural Loans [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 206 268 270 489 489
Allowance for credit loss on PCD acquired loans       0  
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Provision (90) (39) (154) (41)  
Balance at end of period 116 229 116 229 270
Other Agricultural Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (219) (219)
State and Political Subdivision Loans [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 63 52 45 322 322
Allowance for credit loss on PCD acquired loans       0  
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Provision 0 (4) 18 6  
Balance at end of period 63 48 63 48 45
State and Political Subdivision Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       (280) (280)
Unallocated [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period 26 401 367 0 0
Allowance for credit loss on PCD acquired loans       0  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Provision 1,740 (73) 1,399 (398)  
Balance at end of period $ 1,766 $ 328 $ 1,766 328 367
Unallocated [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]          
Financing Receivable, Allowance for Credit Losses [Roll Forward]          
Balance at beginning of period       $ 726 $ 726