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Loans and Allowance for Loan Losses - Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Loans, Total past due loans accruing	$ 2,674	$ 3,437
Loans, Non-accrual loans	7,560	5,546
Loan, Total past due and non-accrual loans	10,234	8,983
Loan, Total loans not past due	$ 550,810	$ 529,409
Percentage of gross loans, Total past due loans accruing	0.48%	0.64%
Percent of gross loans, Non-accrual loans	1.35%	1.03%
Percentage of Total past due and non-accrual loans	1.83%	1.67%
Percentage of Total loans not past due	98.17%	98.33%
30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	$ 1,000	$ 2,069
Percentage of gross loans, Total past due loans accruing	0.18%	0.39%
60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	$ 1,674	$ 1,368
Percentage of gross loans, Total past due loans accruing	0.30%	0.25%
90 Days or More Delinquent and Accruing [Member]
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 Loans [Member]
Loans, Total past due loans accruing	$ 288	$ 672
Loans, Non-accrual loans	1,271	1,088
Loan, Total past due and non-accrual loans	1,559	1,760
Loan, Total loans not past due	147,435	144,745
One-to-Four Family Residential Real Estate Loans [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	67	79
One-to-Four Family Residential Real Estate Loans [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	221	593
One-to-Four Family Residential Real Estate Loans [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Construction and Land Loan [Member]
Loans, Total past due loans accruing
Loans, Non-accrual loans	796	898
Loan, Total past due and non-accrual loans	796	898
Loan, Total loans not past due	23,861	21,561
Construction and Land Loan [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Construction and Land Loan [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Construction and Land Loan [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Commercial Real Estate [Member]
Loans, Total past due loans accruing	329	1,844
Loans, Non-accrual loans	3,483	1,440
Loan, Total past due and non-accrual loans	3,812	3,284
Loan, Total loans not past due	137,900	130,217
Commercial Real Estate [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	265	1,137
Commercial Real Estate [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	64	707
Commercial Real Estate [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Commercial Loans [Member]
Loans, Total past due loans accruing	328	578
Loans, Non-accrual loans	1,548	1,270
Loan, Total past due and non-accrual loans	1,876	1,848
Loan, Total loans not past due	119,395	107,764
Commercial Loans [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	201	510
Commercial Loans [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	127	68
Commercial Loans [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Agriculture Loans [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	456	316
Agriculture Loans [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Municipal Loans [Member]
Loans, Total past due loans accruing
Loans, Non-accrual loans
Loan, Total past due and non-accrual loans
Loan, Total loans not past due	2,628	2,656
Municipal Loans [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Municipal Loans [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Municipal Loans [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Consumer Loans [Member] | 30-59 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	11	27
Consumer Loans [Member] | 90 Days or More Delinquent and Accruing [Member]
Loans, Total past due loans accruing
Agriculture Loans [Member]
Loans, Total past due loans accruing	1,718	316
Loans, Non-accrual loans	447	846
Loan, Total past due and non-accrual loans	2,165	1,162
Loan, Total loans not past due	93,955	97,396
Agriculture Loans [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing	1,262
Consumer Loans [Member]
Loans, Total past due loans accruing	11	27
Loans, Non-accrual loans	15	4
Loan, Total past due and non-accrual loans	26	31
Loan, Total loans not past due	25,636	25,070
Consumer Loans [Member] | 60-89 Days Delinquent and Accruing [Member]
Loans, Total past due loans accruing

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Recorded investment in Financing receivables that are 30 days or more past due and accruing, total.

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