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Loans, Impaired Loans (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Impaired loans [Abstract]    
Unpaid contractual principal balance $ 13,134 $ 17,925
Recorded investment [Abstract]    
Recorded investment with no allowance 10,197 10,246
Recorded investment with allowance 822 7,225
Total recorded investment 11,019 17,471
Related allowance 93 2,347
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 15,394 12,677
Interest income recognized 561 199
Interest Income on Impaired Loans Recognized using Cash Basis Method of Accounting [Abstract]    
Interest income recognized 0 0
Risk Rating of 5 (Special Mention) or Worse [Member]    
Impaired loans [Abstract]    
Threshold aggregate exposure for loan to be considered impaired 500  
Commercial [Member]    
Impaired loans [Abstract]    
Unpaid contractual principal balance 142 1,087
Recorded investment [Abstract]    
Recorded investment with no allowance 133 363
Recorded investment with allowance 0 661
Total recorded investment 133 1,024
Related allowance 0 11
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 300 1,344
Interest income recognized 7 60
Commercial Real Estate [Member]    
Impaired loans [Abstract]    
Unpaid contractual principal balance 555 5,146
Recorded investment [Abstract]    
Recorded investment with no allowance 555 4,875
Recorded investment with allowance 0 0
Total recorded investment 555 4,875
Related allowance 0 0
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 4,165 3,489
Interest income recognized 509 58
Agriculture [Member]    
Impaired loans [Abstract]    
Unpaid contractual principal balance 10,680 9,189
Recorded investment [Abstract]    
Recorded investment with no allowance 8,712 4,165
Recorded investment with allowance 0 4,965
Total recorded investment 8,712 9,130
Related allowance 0 2,093
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 9,046 5,481
Interest income recognized 0 0
Residential Mortgage [Member]    
Impaired loans [Abstract]    
Unpaid contractual principal balance 701 1,046
Recorded investment [Abstract]    
Recorded investment with no allowance 138 153
Recorded investment with allowance 517 883
Total recorded investment 655 1,036
Related allowance 81 159
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 809 1,062
Interest income recognized 23 30
Residential Construction [Member]    
Impaired loans [Abstract]    
Unpaid contractual principal balance 241 684
Recorded investment [Abstract]    
Recorded investment with no allowance 0 0
Recorded investment with allowance 241 652
Total recorded investment 241 652
Related allowance 10 83
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 329 671
Interest income recognized 15 34
Consumer [Member]    
Impaired loans [Abstract]    
Unpaid contractual principal balance 815 773
Recorded investment [Abstract]    
Recorded investment with no allowance 659 690
Recorded investment with allowance 64 64
Total recorded investment 723 754
Related allowance 2 1
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]    
Average recorded investment 745 630
Interest income recognized $ 7 $ 17