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Loans and Allowance for Loan Losses, Impaired Loans and TDR's (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
Impaired Loans [Abstract]    
Unpaid principal balance $ 24,906 $ 27,203
Recorded investment with no allowance 23,601 22,946
Recorded investment with an allowance 253 177
Total recorded investment 23,854 23,123
Related allowance 253 177
Average recorded investment 24,657 23,765
Interest income recognized 1,178 1,590
Troubled Debt Restructurings [Abstract]    
TDR loans impaired $ 1,400 12,980
Newly modified troubled-debt restructurings | shares 0  
Troubled debt restructurings modified that subsequently defaulted $ 0  
Construction & Development [Member]    
Impaired Loans [Abstract]    
Unpaid principal balance 0 0
Recorded investment with no allowance 0 0
Recorded investment with an allowance 0 0
Total recorded investment 0 0
Related allowance 0 0
Average recorded investment 0 0
Interest income recognized 0 0
1 - 4 Family Real Estate [Member]    
Impaired Loans [Abstract]    
Unpaid principal balance 0 0
Recorded investment with no allowance 0 0
Recorded investment with an allowance 0 0
Total recorded investment 0 0
Related allowance 0 0
Average recorded investment 0 570
Interest income recognized 0 0
Commercial Real Estate - Other [Member]    
Impaired Loans [Abstract]    
Unpaid principal balance 15,412 8,353
Recorded investment with no allowance 14,481 8,054
Recorded investment with an allowance 0 0
Total recorded investment 14,481 8,054
Related allowance 0 0
Average recorded investment 11,879 5,209
Interest income recognized 902 554
Commercial & Industrial [Member]    
Impaired Loans [Abstract]    
Unpaid principal balance 9,476 18,082
Recorded investment with no allowance 9,101 14,424
Recorded investment with an allowance 253 177
Total recorded investment 9,354 14,601
Related allowance 253 177
Average recorded investment 12,584 15,668
Interest income recognized 275 1,049
Troubled Debt Restructurings [Abstract]    
TDR loans impaired   10,900
Agricultural [Member]    
Impaired Loans [Abstract]    
Unpaid principal balance 0 768
Recorded investment with no allowance 0 468
Recorded investment with an allowance 0 0
Total recorded investment 0 468
Related allowance 0 0
Average recorded investment 161 2,318
Interest income recognized 0 (13)
Troubled Debt Restructurings [Abstract]    
TDR loans impaired   469
Consumer [Member]    
Impaired Loans [Abstract]    
Unpaid principal balance 18 0
Recorded investment with no allowance 19 0
Recorded investment with an allowance 0 0
Total recorded investment 19 0
Related allowance 0 0
Average recorded investment 33 0
Interest income recognized 1 0
Commercial Real Estate [Member]    
Troubled Debt Restructurings [Abstract]    
TDR loans impaired $ 1,400 $ 1,600