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Regulatory Capital Matters - Summary of Actual and Required Capital Amounts and Ratios, Exclusive of Capital Conservation Buffer (Details)
$ in Thousands
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Total capital (to risk-weighted assets), Actual Amount $ 165,944 $ 155,287
Tier 1 capital (to risk-weighted assets), Actual Amount 165,944 142,147
Common equity Tier 1 capital (to risk-weighted assets), Actual Amount 182,439 142,147
Tier 1 capital (to average assets), Actual Amount $ 165,944 $ 142,147
Total capital (to risk-weighted assets), Actual Ratio 0.1242 0.1481
Tier 1 capital (to risk-weighted assets), Actual Ratio 0.1242 0.1356
Common equity Tier 1 capital (to risk-weighted assets), Actual Ratio 0.1366 0.1356
Tier 1 capital (to average assets), Actual Ratio 0.0958 0.1055
Bank    
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Total capital (to risk-weighted assets), Actual Amount $ 163,387 $ 152,232
Tier 1 capital (to risk-weighted assets), Actual Amount 163,387 139,092
Common equity Tier 1 capital (to risk-weighted assets), Actual Amount 179,882 139,092
Tier 1 capital (to average assets), Actual Amount $ 163,387 $ 139,092
Total capital (to risk-weighted assets), Actual Ratio 0.1223 0.1452
Tier 1 capital (to risk-weighted assets), Actual Ratio 0.1223 0.1327
Common equity Tier 1 capital (to risk-weighted assets), Actual Ratio 0.1347 0.1327
Tier 1 capital (to average assets), Actual Ratio 0.0944 0.1032
Total capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes $ 60,107 $ 83,859
Tier 1 capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes 80,143 62,894
Common equity Tier 1 capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes 106,857 47,171
Tier 1 capital (to average assets), Amount, Required for Capital Adequacy Purposes $ 69,266 $ 53,915
Total capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes 0.0450 0.0800
Tier 1 capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes 0.0600 0.0600
Common equity Tier 1 capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes 0.0800 0.0450
Tier 1 capital (to average assets), Ratio, Required for Capital Adequacy Purposes 0.0400 0.0400
Total capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized" $ 86,822 $ 104,824
Tier 1 capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized" 106,857 83,859
Common equity Tier 1 capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized" 133,572 68,136
Tier 1 capital (to average assets), Amount, Minimum To be Considered "Well Capitalized" $ 86,582 $ 67,393
Total capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized" 0.0650 0.1000
Tier 1 capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized" 0.0800 0.0800
Common equity Tier 1 capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized" 0.1000 0.0650
Tier 1 capital (to average assets), Ratio, Minimum To be Considered "Well Capitalized" 0.0500 0.0500