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Loans and Allowance for Loan Losses - Schedule of Impaired Financing Receivables (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Unpaid contractual principal | $ 12,823 | $ 10,800
Impaired loan balance | 10,598 | 8,680
Impaired loans without an allowance | 8,870 | 6,524
Impaired loans with an allowance | 1,728 | 2,156
Related allowance recorded | 543 | 733
Year-to-date average loan balance | 10,689 | 9,104
Year-to-date interest income recognized | 141 | 584
One-to-Four Family Residential Real Estate Loans [Member] |  |
Unpaid contractual principal | 1,477 | 1,297
Impaired loan balance | 1,436 | 1,256
Impaired loans without an allowance | 1,067 | 887
Impaired loans with an allowance | 369 | 369
Related allowance recorded | 129 | 129
Year-to-date average loan balance | 1,442 | 1,291
Year-to-date interest income recognized | 2 | 10
Construction and Land Loan [Member] |  |
Unpaid contractual principal | 3,154 | 3,214
Impaired loan balance | 1,319 | 1,479
Impaired loans without an allowance | 1,228 | 1,288
Impaired loans with an allowance | 91 | 191
Related allowance recorded | 91 | 191
Year-to-date average loan balance | 1,353 | 1,631
Year-to-date interest income recognized | 7 | 36
Commercial Real Estate Loans [Member] |  |
Unpaid contractual principal | 5,504 | 3,461
Impaired loan balance | 5,504 | 3,461
Impaired loans without an allowance | 5,308 | 3,258
Impaired loans with an allowance | 196 | 203
Related allowance recorded | 52 | 103
Year-to-date average loan balance | 5,510 | 3,489
Year-to-date interest income recognized | 118 | 478
Commercial Loans [Member] |  |
Unpaid contractual principal | 1,710 | 1,427
Impaired loan balance | 1,576 | 1,298
Impaired loans without an allowance | 680 | 416
Impaired loans with an allowance | 896 | 882
Related allowance recorded | 235 | 204
Year-to-date average loan balance | 1,578 | 1,464
Year-to-date interest income recognized | 1 | 11
Agriculture Loans [Member] |  |
Unpaid contractual principal | 905 | 1,339
Impaired loan balance | 690 | 1,124
Impaired loans without an allowance | 514 | 613
Impaired loans with an allowance | 176 | 511
Related allowance recorded | 36 | 106
Year-to-date average loan balance | 733 | 1,166
Year-to-date interest income recognized | 13 | 48
Municipal Loans [Member] |  |
Unpaid contractual principal | 58 | 58
Impaired loan balance | 58 | 58
Impaired loans without an allowance | 58 | 58
Impaired loans with an allowance |  |
Related allowance recorded |  |
Year-to-date average loan balance | 58 | 58
Year-to-date interest income recognized |  | 1
Consumer Loans [Member] |  |
Unpaid contractual principal | 15 | 4
Impaired loan balance | 15 | 4
Impaired loans without an allowance | 15 | 4
Impaired loans with an allowance |  |
Related allowance recorded |  |
Year-to-date average loan balance | 15 | 5
Year-to-date interest income recognized |  |

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