Loans and Allowance for Credit Losses - Loans - Current, Past Due, and Non-Accrual Loans by Categories of loans and Restructured Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 209,684	$ 247,041
Non-accrual	338	4,512	$ 4,127
Total	210,392	253,772
Allowance for loan loss	2,470	1,476	2,066
Loans and Leases Receivable, Gross	210,392	253,772
Financing Receivable, Recorded Investment, Current	209,684	247,041
Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	355	2,201
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days or More and Still Accruing	15	18
Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	136,567	142,489
Non-accrual	123	4,299
Total	136,705	148,555
Loans and Leases Receivable, Gross	136,705	148,555
Financing Receivable, Recorded Investment, Current	136,567	142,489
Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due		1,749
Real Estate Loan | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days or More and Still Accruing	15	18
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	17,376	27,912
Non-accrual	71
Total	17,447	27,912
Loans and Leases Receivable, Gross	17,447	27,912
Financing Receivable, Recorded Investment, Current	17,376	27,912
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	56,240	77,305
Loans and Leases Receivable, Gross	56,240	77,305
Construction And Land Development [Member] | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4,087	2,553
Total	4,087	2,553
Allowance for loan loss	5	9	24
Loans and Leases Receivable, Gross	4,087	2,553
Financing Receivable, Recorded Investment, Current	4,087	2,553
Farmland | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	342	350
Total	342	350
Allowance for loan loss	11	2	2
Loans and Leases Receivable, Gross	342	350
Financing Receivable, Recorded Investment, Current	342	350
Single-family | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	77,981	81,057
Non-accrual	123	270	790
Total	78,119	82,520
Allowance for loan loss	1,357	513	849
Loans and Leases Receivable, Gross	78,119	82,520
Financing Receivable, Recorded Investment, Current	77,981	81,057
Single-family | Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due		1,175
Single-family | Real Estate Loan | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days or More and Still Accruing	15	18
Multi-family | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	5,428	6,105
Non-accrual			24
Total	5,428	6,105
Allowance for loan loss	105	39	40
Loans and Leases Receivable, Gross	5,428	6,105
Financing Receivable, Recorded Investment, Current	5,428	6,105
Commercial | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	48,729	52,424
Non-accrual		4,029	3,139
Total	48,729	57,027
Allowance for loan loss	278	218	241
Loans and Leases Receivable, Gross	48,729	57,027
Financing Receivable, Recorded Investment, Current	48,729	52,424
Commercial | Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due		574
Commercial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	17,447	27,912
Loans and Leases Receivable, Gross	17,447	27,912
Commercial | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	55,741	76,640
Non-accrual	144	213
Total	56,240	77,305
Loans and Leases Receivable, Gross	56,240	77,305
Financing Receivable, Recorded Investment, Current	55,741	76,640
Commercial | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	355	452
Commercial and industrial | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	10,003	10,800
Total	10,003	10,800
Allowance for loan loss	115	67	69
Loans and Leases Receivable, Gross	10,003	10,800
Financing Receivable, Recorded Investment, Current	10,003	10,800
SBA Guaranty | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	71
SBA Guaranty | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	6,326	7,200
Non-accrual	71
Total	6,397	7,200
Allowance for loan loss	30	48	25
Loans and Leases Receivable, Gross	6,397	7,200
Financing Receivable, Recorded Investment, Current	6,326	7,200
Comm SBA PPP
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		10,000
Loans and Leases Receivable, Gross		10,000
Comm SBA PPP | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,047	9,912
Total	1,047	9,912
Loans and Leases Receivable, Gross	1,047	9,912
Financing Receivable, Recorded Investment, Current	1,047	9,912
Consumer and Indirect | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,086	3,029
Non-accrual		34	51
Total	2,090	3,063
Allowance for loan loss	36	11	11
Loans and Leases Receivable, Gross	2,090	3,063
Financing Receivable, Recorded Investment, Current	2,086	3,029
Consumer and Indirect | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	4
Automobile | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	53,655	73,611
Non-accrual	144	179	123
Total	54,150	74,242
Allowance for loan loss	533	569	$ 805
Loans and Leases Receivable, Gross	54,150	74,242
Financing Receivable, Recorded Investment, Current	53,655	73,611
Automobile | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	$ 351	$ 452