Loans - Aging (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans
Total Loans	$ 231,194	$ 224,828
Nonaccrual Loans	149	284
Current Loans
Loans
Total Loans	231,005	224,714
Loans Past Due 30-89 Days
Loans
Total Loans	189	114
Loans Past Due 90+ Days
Loans
Total Loans	0	0
Commercial | Development
Loans
Total Loans	15,841	21,396
Nonaccrual Loans	0	0
Commercial | Development | Current Loans
Loans
Total Loans	15,841	21,396
Commercial | Development | Loans Past Due 30-89 Days
Loans
Total Loans	0	0
Commercial | Development | Loans Past Due 90+ Days
Loans
Total Loans	0	0
Commercial | Real estate
Loans
Total Loans	99,374	94,830
Nonaccrual Loans	0	112
Commercial | Real estate | Current Loans
Loans
Total Loans	99,374	94,830
Commercial | Real estate | Loans Past Due 30-89 Days
Loans
Total Loans	0	0
Commercial | Real estate | Loans Past Due 90+ Days
Loans
Total Loans	0	0
Commercial | Commercial and industrial
Loans
Total Loans	24,801	18,387
Nonaccrual Loans	0	0
Commercial | Commercial and industrial | Current Loans
Loans
Total Loans	24,801	18,387
Commercial | Commercial and industrial | Loans Past Due 30-89 Days
Loans
Total Loans	0	0
Commercial | Commercial and industrial | Loans Past Due 90+ Days
Loans
Total Loans	0	0
Residential real estate and consumer | One-to-four family owner-occupied
Loans
Total Loans	18,754	18,158
Nonaccrual Loans	149	172
Residential real estate and consumer | One-to-four family owner-occupied | Current Loans
Loans
Total Loans	18,754	18,044
Residential real estate and consumer | One-to-four family owner-occupied | Loans Past Due 30-89 Days
Loans
Total Loans	0	114
Residential real estate and consumer | One-to-four family owner-occupied | Loans Past Due 90+ Days
Loans
Total Loans	0	0
Residential real estate and consumer | One-to-four family investor-owned
Loans
Total Loans	27,737	26,234
Nonaccrual Loans	0	0
Residential real estate and consumer | One-to-four family investor-owned | Current Loans
Loans
Total Loans	27,548	26,234
Residential real estate and consumer | One-to-four family investor-owned | Loans Past Due 30-89 Days
Loans
Total Loans	189	0
Residential real estate and consumer | One-to-four family investor-owned | Loans Past Due 90+ Days
Loans
Total Loans	0	0
Residential real estate and consumer | Multifamily
Loans
Total Loans	41,602	42,511
Nonaccrual Loans	0	0
Residential real estate and consumer | Multifamily | Current Loans
Loans
Total Loans	41,602	42,511
Residential real estate and consumer | Multifamily | Loans Past Due 30-89 Days
Loans
Total Loans	0	0
Residential real estate and consumer | Multifamily | Loans Past Due 90+ Days
Loans
Total Loans	0	0
Residential real estate and consumer | Consumer
Loans
Total Loans	3,085	3,312
Nonaccrual Loans	0	0
Residential real estate and consumer | Consumer | Current Loans
Loans
Total Loans	3,085	3,312
Residential real estate and consumer | Consumer | Loans Past Due 30-89 Days
Loans
Total Loans	0	0
Residential real estate and consumer | Consumer | Loans Past Due 90+ Days
Loans
Total Loans	$ 0	$ 0