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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 ($) | Dec. 31, 2020 USD ($)
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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

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