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Schedule of Impaired Loans (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal $ 13,640 $ 14,763
Impaired loan balance 11,471 12,462
Impaired loans without an allowance 5,639 8,473
Impaired loans with an allowance 5,832 3,989
Related allowance recorded 693 266
Year-to-date average loan balance 11,479 12,948
Year-to-date interest income recognized 128 148
One To Four Family Residential Real Estate Loans [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 917 914
Impaired loan balance 917 914
Impaired loans without an allowance 917 914
Impaired loans with an allowance
Related allowance recorded
Year-to-date average loan balance 933 925
Year-to-date interest income recognized 6 3
Construction and Land Loans [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 2,569 2,872
Impaired loan balance 919 1,137
Impaired loans without an allowance 919 1,137
Impaired loans with an allowance
Related allowance recorded
Year-to-date average loan balance 996 1,211
Year-to-date interest income recognized 16 26
Commercial Real Estate Loans [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 6,124 8,119
Impaired loan balance 6,124 8,119
Impaired loans without an allowance 2,384 4,302
Impaired loans with an allowance 3,740 3,817
Related allowance recorded 45 177
Year-to-date average loan balance 6,173 8,152
Year-to-date interest income recognized 28 8
Commercial Loan [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 1,437 1,990
Impaired loan balance 1,086 1,639
Impaired loans without an allowance 573 1,543
Impaired loans with an allowance 513 96
Related allowance recorded 505 22
Year-to-date average loan balance 1,127 1,984
Year-to-date interest income recognized 30 43
Agriculture Loans [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 2,555 829
Impaired loan balance 2,387 614
Impaired loans without an allowance 808 538
Impaired loans with an allowance 1,579 76
Related allowance recorded 143 67
Year-to-date average loan balance 2,212 618
Year-to-date interest income recognized 48 67
Municipal Loans [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 36 36
Impaired loan balance 36  
Impaired loans without an allowance 36 36
Impaired loans with an allowance
Related allowance recorded
Year-to-date average loan balance 36 54
Year-to-date interest income recognized 1
Consumer Loan [Member]    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Unpaid contractual principal 2 3
Impaired loan balance 2 3
Impaired loans without an allowance 2 3
Impaired loans with an allowance
Related allowance recorded
Year-to-date average loan balance 2 4
Year-to-date interest income recognized