Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	$ 3,688	$ 3,437
Loans, Non-accrual loans	6,346	5,546
Loan, Total past due and non-accrual loans	10,034	8,983
Loan, Total loans not past due	$ 729,278	$ 529,409
Percentage of gross loans, Total past due loans accruing	0.50%	0.64%
Percent of gross loans, Non-accrual loans	0.86%	1.03%
Percentage of Total past due and non-accrual loans	1.36%	1.67%
Percentage of Total loans not past due	98.64%	98.33%
Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	$ 1,571	$ 2,069
Percentage of gross loans, Total past due loans accruing	0.21%	0.39%
Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	$ 2,117	$ 1,368
Percentage of gross loans, Total past due loans accruing	0.29%	0.25%
Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Percentage of gross loans, Total past due loans accruing	0.00%	0.00%
One To Four Family Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	$ 455	$ 672
Loans, Non-accrual loans	1,243	1,088
Loan, Total past due and non-accrual loans	1,698	1,760
Loan, Total loans not past due	160,646	144,745
One To Four Family Residential Real Estate [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	30	79
One To Four Family Residential Real Estate [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	425	593
One To Four Family Residential Real Estate [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Construction and Land Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	598
Loans, Non-accrual loans	697	898
Loan, Total past due and non-accrual loans	1,295	898
Loan, Total loans not past due	26,799	21,561
Construction and Land Loans [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	598
Construction and Land Loans [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Construction and Land Loans [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	1,654	1,844
Loans, Non-accrual loans	2,910	1,440
Loan, Total past due and non-accrual loans	4,564	3,284
Loan, Total loans not past due	150,240	130,217
Commercial Real Estate [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing		1,137
Commercial Real Estate [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	1,654	707
Commercial Real Estate [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Commercial Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	480	578
Loans, Non-accrual loans	1,202	1,270
Loan, Total past due and non-accrual loans	1,682	1,848
Loan, Total loans not past due	135,604	107,764
Commercial Loans [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	443	510
Commercial Loans [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	37	68
Commercial Loans [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Paycheck Protection Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Loans, Non-accrual loans
Loan, Total past due and non-accrual loans
Loan, Total loans not past due	130,977
Paycheck Protection Loans [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Paycheck Protection Loans [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Paycheck Protection Loans [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Agriculture Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	476	316
Loans, Non-accrual loans	292	846
Loan, Total past due and non-accrual loans	768	1,162
Loan, Total loans not past due	98,662	97,396
Agriculture Loans [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	476	316
Agriculture Loans [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Agriculture Loans [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Municipal Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Loans, Non-accrual loans
Loan, Total past due and non-accrual loans
Loan, Total loans not past due	2,389	2,656
Municipal Loans [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Municipal Loans [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Municipal Loans [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing
Consumer Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	25	27
Loans, Non-accrual loans	2	4
Loan, Total past due and non-accrual loans	27	31
Loan, Total loans not past due	23,961	25,070
Consumer Loans [Member] | Thirty To Fifty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	24	27
Consumer Loans [Member] | Sixty To Eighty Nine Days Delinquent And Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing	1
Consumer Loans [Member] | Ninety Days or More Delinquent and Accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Total past due loans accruing