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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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Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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