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Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | $ 846 | $ 1,990 |
Loans, Non-accrual loans | 4,676 | 5,230 |
Loan, Total past due and non-accrual loans | $ 5,522 | $ 7,220 |
Percentage of Total loans not past due | 0.13% | 0.30% |
Percent of gross loans, Non-accrual loans | 0.74% | 0.79% |
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | $ 838 | $ 1,516 |
Percentage of Total loans not past due | 0.13% | 0.23% |
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | $ 8 | $ 474 |
Percentage of Total loans not past due | 0.00% | 0.07% |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Percentage of Total loans not past due | 0.00% | 0.00% |
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | $ 628,027 | $ 655,168 |
Percentage of Total loans not past due | 99.13% | 98.91% |
Financial Asset, Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 0.87% | 1.09% |
One To Four Family Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | $ 26 | $ 20 |
One To Four Family Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  | 125 |
One To Four Family Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
One to four family residential real estate loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 26 | 145 |
Loans, Non-accrual loans | 421 | 417 |
Loan, Total past due and non-accrual loans | 447 | 562 |
One to four family residential real estate loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 169,067 | 165,519 |
Construction and Land Loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Loans, Non-accrual loans | 195 | 681 |
Loan, Total past due and non-accrual loans | 195 | 681 |
Construction and Land Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Construction and Land Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Construction and Land Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Construction and Land Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 25,213 | 26,963 |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 195 |  |
Loans, Non-accrual loans | 2,194 | 2,214 |
Loan, Total past due and non-accrual loans | 2,389 | 2,214 |
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 195 |  |
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Commercial Real Estate [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 194,347 | 196,258 |
Commercial Loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 289 | 629 |
Loans, Non-accrual loans | 578 | 593 |
Loan, Total past due and non-accrual loans | 867 | 1,222 |
Commercial Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 289 | 289 |
Commercial Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  | 340 |
Commercial Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Commercial Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 126,359 | 130,932 |
Paycheck Protection Loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans, Non-accrual loans |  |  |
Loan, Total past due and non-accrual loans |  |  |
Paycheck Protection Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Paycheck Protection Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Paycheck Protection Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Paycheck Protection Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 5,218 | 17,179 |
Paycheck Protection Loans [Member] | Ninety Days or More Delinquent and Accruing [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Agriculture Loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 308 | 1,189 |
Loans, Non-accrual loans | 1,288 | 1,325 |
Loan, Total past due and non-accrual loans | 1,596 | 2,514 |
Agriculture Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 308 | 1,189 |
Agriculture Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Agriculture Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Agriculture Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 80,888 | 91,753 |
Municipal Loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Loans, Non-accrual loans |  |  |
Loan, Total past due and non-accrual loans |  |  |
Municipal Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Municipal Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Municipal Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Municipal Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 2,212 | 2,050 |
Consumer loans [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 28 | 27 |
Loans, Non-accrual loans |  |  |
Loan, Total past due and non-accrual loans | 28 | 27 |
Consumer loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 20 | 18 |
Consumer loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | 8 | 9 |
Consumer loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due |  |  |
Consumer loans [Member] | Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Percentage of Total loans not past due | $ 24,723 | $ 24,514 |

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