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Schedule of Impaired Financing Receivables (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | $ 14,763,000 | $ 10,800,000 | $ 10,641,000
Impaired loan balance | 12,462,000 | 8,680,000 | 8,691,000
Impaired loans without an allowance | 8,473,000 | 6,524,000 | 5,994,000
Impaired loans with an allowance | 3,989,000 | 2,156,000 | 2,697,000
Related allowance recorded | 266,000 | 733,000 | 310,000
Year-to-date average loan balance | 12,948,000 | 9,104,000 | 9,745,000
Year-to-date interest income recognized | 148,000 | 584,000 | 603,000
One To Four Family Residential Real Estate Loans [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 914,000 | 1,297,000 | 623,000
Impaired loan balance | 914,000 | 1,256,000 | 623,000
Impaired loans without an allowance | 914,000 | 887,000 | 413,000
Impaired loans with an allowance |  | 369,000 | 210,000
Related allowance recorded |  | 129,000 | 100,000
Year-to-date average loan balance | 925,000 | 1,291,000 | 640,000
Year-to-date interest income recognized | 3,000 | 10,000 | 10,000
Construction and Land Loans [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 2,872,000 | 3,214,000 | 3,543,000
Impaired loan balance | 1,137,000 | 1,479,000 | 1,808,000
Impaired loans without an allowance | 1,137,000 | 1,288,000 | 1,383,000
Impaired loans with an allowance |  | 191,000 | 425,000
Related allowance recorded |  | 191,000 | 103,000
Year-to-date average loan balance | 1,211,000 | 1,631,000 | 2,689,000
Year-to-date interest income recognized | 26,000 | 36,000 | 53,000
Commercial Real Estate Loans [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 8,119,000 | 3,461,000 | 3,912,000
Impaired loan balance | 8,119,000 | 3,461,000 | 3,912,000
Impaired loans without an allowance | 4,302,000 | 3,258,000 | 2,120,000
Impaired loans with an allowance | 3,817,000 | 203,000 | 1,792,000
Related allowance recorded | 177,000 | 103,000 | 67,000
Year-to-date average loan balance | 8,152,000 | 3,489,000 | 3,928,000
Year-to-date interest income recognized | 8,000 | 478,000 | 487,000
Commercial Loan [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 1,990,000 | 1,427,000 | 1,528,000
Impaired loan balance | 1,639,000 | 1,298,000 | 1,528,000
Impaired loans without an allowance | 1,543,000 | 416,000 | 1,446,000
Impaired loans with an allowance | 96,000 | 882,000 | 82,000
Related allowance recorded | 22,000 | 204,000 | 27,000
Year-to-date average loan balance | 1,984,000 | 1,464,000 | 1,537,000
Year-to-date interest income recognized | 43,000 | 11,000 |
Agriculture Loans [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 829,000 | 1,339,000 | 932,000
Impaired loan balance | 614,000 | 1,124,000 | 717,000
Impaired loans without an allowance | 538,000 | 613,000 | 529,000
Impaired loans with an allowance | 76,000 | 511,000 | 188,000
Related allowance recorded | 67,000 | 106,000 | 13,000
Year-to-date average loan balance | 618,000 | 1,166,000 | 844,000
Year-to-date interest income recognized | 67,000 | 48,000 | 52,000
Municipal Loans [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 36,000 | 58,000 | 58,000
Impaired loan balance | 36,000 | 58,000 | 58,000
Impaired loans without an allowance | 36,000 | 58,000 | 58,000
Impaired loans with an allowance |  |  |
Related allowance recorded |  |  |
Year-to-date average loan balance | 54,000 | 58,000 | 58,000
Year-to-date interest income recognized | 1,000 | 1,000 | 1,000
Consumer Loan [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Unpaid contractual principal | 3,000 | 4,000 | 45,000
Impaired loan balance | 3,000 | 4,000 | 45,000
Impaired loans without an allowance | 3,000 | 4,000 | 45,000
Impaired loans with an allowance |  |  |
Related allowance recorded |  |  |
Year-to-date average loan balance | 4,000 | 5,000 | 49,000
Year-to-date interest income recognized |  |  |

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