Schedule of Troubled Debt Restructurings on Financing Receivables (Details) Number in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) Number	Dec. 31, 2020 USD ($) Number
One To Four Family Residential Real Estate Loans [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	2	2
Financing receivable, modifications, recorded investment, non accrual balance
Financing receivable, modifications, recorded investment, accruing balance	$ 161	$ 165
Construction and Land Loans [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	4	5
Financing receivable, modifications, recorded investment, non accrual balance	$ 684	$ 693
Financing receivable, modifications, recorded investment, accruing balance	$ 235	$ 443
Commercial Real Estate Loans [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	2	2
Financing receivable, modifications, recorded investment, non accrual balance	$ 1,227	$ 1,227
Financing receivable, modifications, recorded investment, accruing balance
Commercial Loan [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	4	7
Financing receivable, modifications, recorded investment, non accrual balance	$ 33	$ 33
Financing receivable, modifications, recorded investment, accruing balance	$ 489	$ 765
Agriculture loan [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	4	4
Financing receivable, modifications, recorded investment, non accrual balance
Financing receivable, modifications, recorded investment, accruing balance	$ 721	$ 538
Municipal Loans [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	1	1
Financing receivable, modifications, recorded investment, non accrual balance
Financing receivable, modifications, recorded investment, accruing balance	$ 36	$ 36
Troubled Debt Restructurings [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Troubled debt restructurings, Number of loans | Number	17	21
Financing receivable, modifications, recorded investment, non accrual balance	$ 1,944	$ 1,953
Financing receivable, modifications, recorded investment, accruing balance	$ 1,642	$ 1,947