Loans and Allowance - Major Categories of Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 246,853	$ 253,772
Less: Allowance for loan losses	(2,921)	(1,476)
Loans, net	$ 243,932	$ 252,296
Loans and lease receivable allowances, percentage	100.00%	100.00%
Increase (decrease) in loans and leases receivable	$ (8,400)
Percentage of increase (decrease) in loans and leases receivable	(3.32%)
Real Estate Loan
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 148,135	$ 148,555
Loans, net		148,555
Commercial and Industrial Sector [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	27,957	27,912
Loans, net		27,912
Consumer Loan [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	70,761	77,305
Construction And Land Development \| Real Estate Loan
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 3,174	2,553
Loans, net		$ 2,553
Loans and lease receivable allowances, percentage	1.00%	1.00%
Increase (decrease) in loans and leases receivable	$ (600)
Percentage of increase (decrease) in loans and leases receivable	(24.34%)
Farmland \| Real Estate Loan
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 349	$ 350
Loans, net		350
Increase (decrease) in loans and leases receivable		$ (100)
Percentage of increase (decrease) in loans and leases receivable		0.42%
Single-family residential \| Real Estate Loan
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 82,820	$ 82,520
Loans, net		$ 82,520
Loans and lease receivable allowances, percentage	34.00%	33.00%
Increase (decrease) in loans and leases receivable	$ 300
Percentage of increase (decrease) in loans and leases receivable	0.36%
Multifamily \| Real Estate Loan
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 6,069	$ 6,105
Loans, net		$ 6,105
Loans and lease receivable allowances, percentage	2.00%	2.00%
Commercial \| Real Estate Loan
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 55,723	$ 57,027
Loans, net		$ 57,027
Loans and lease receivable allowances, percentage	23.00%	23.00%
Increase (decrease) in loans and leases receivable	$ (1,300)
Percentage of increase (decrease) in loans and leases receivable	2.29%
Commercial \| Consumer Loan [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 70,761
Commercial And Industrial Portfolio Segment [Member] \| Commercial and Industrial Sector [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 9,521	$ 10,800
Loans, net		$ 10,800
Loans and lease receivable allowances, percentage	4.00%	4.00%
SBA Guaranty \| Commercial and Industrial Sector [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 7,192	$ 7,200
Loans, net		$ 7,200
Loans and lease receivable allowances, percentage	3.00%	3.00%
Comm SBA PPP \| Commercial and Industrial Sector [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 11,244	$ 9,912
Loans, net		$ 9,912
Loans and lease receivable allowances, percentage	5.00%	4.00%
Increase (decrease) in loans and leases receivable	$ 1,300
Percentage of increase (decrease) in loans and leases receivable	13.44%
Consumer \| Consumer Loan [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 2,482	$ 3,063
Loans, net		$ 3,063
Loans and lease receivable allowances, percentage	1.00%	1.00%
Increase (decrease) in loans and leases receivable	$ 600
Percentage of increase (decrease) in loans and leases receivable	18.97%
Automobile \| Consumer Loan [Member]
Schedule of Available-for-sale Securities [Line Items]
Loans, net of deferred fees and costs	$ 68,279	$ 74,242
Loans and lease receivable allowances, percentage	27.00%	29.00%
Increase (decrease) in loans and leases receivable	$ 6,000
Percentage of increase (decrease) in loans and leases receivable	8.03%

The increase (decrease) during the reporting period in amount of loans and leases receivables.

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The percentage of increase (decrease) in loans and leases receivable.

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The Percentage of Loans and Leases Receivable Allowance.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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