Regulatory Capital Matters - Summary of Actual and Required Capital Amounts and Ratios, Exclusive of Capital Conservation Buffer (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Consolidated
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), Actual Amount	$ 147,410	$ 150,092
Tier 1 capital (to risk-weighted assets), Actual Amount	136,594	139,975
Common equity Tier 1 capital (to risk-weighted assets), Actual Amount	136,594	139,975
Tier 1 capital (to average assets), Actual Amount	$ 136,594	$ 139,975
Total capital (to risk-weighted assets), Actual Ratio	14.78%	15.18%
Tier 1 capital (to risk-weighted assets), Actual Ratio	13.69%	14.16%
Common equity Tier 1 capital (to risk-weighted assets), Actual Ratio	13.69%	14.16%
Tier 1 capital (to average assets), Actual Ratio	11.59%	12.14%
Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), Actual Amount	$ 145,465	$ 147,820
Tier 1 capital (to risk-weighted assets), Actual Amount	134,649	137,703
Common equity Tier 1 capital (to risk-weighted assets), Actual Amount	134,649	137,703
Tier 1 capital (to average assets), Actual Amount	$ 134,649	$ 137,703
Total capital (to risk-weighted assets), Actual Ratio	14.59%	14.96%
Tier 1 capital (to risk-weighted assets), Actual Ratio	13.50%	13.93%
Common equity Tier 1 capital (to risk-weighted assets), Actual Ratio	13.50%	13.93%
Tier 1 capital (to average assets), Actual Ratio	11.42%	11.95%
Total capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes	$ 79,782	$ 79,069
Tier 1 capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes	59,836	59,301
Common equity Tier 1 capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes	44,877	44,476
Tier 1 capital (to average assets), Amount, Required for Capital Adequacy Purposes	$ 47,143	$ 46,103
Total capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes	8.00%	8.00%
Tier 1 capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes	6.00%	6.00%
Common equity Tier 1 capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes	4.50%	4.50%
Tier 1 capital (to average assets), Ratio, Required for Capital Adequacy Purposes	4.00%	4.00%
Total capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized"	$ 99,727	$ 98,836
Tier 1 capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized"	79,782	79,069
Common equity Tier 1 capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized"	64,823	64,243
Tier 1 capital (to average assets), Amount, Minimum To be Considered "Well Capitalized"	$ 58,929	$ 57,629
Total capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized"	10.00%	10.00%
Tier 1 capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized"	8.00%	8.00%
Common equity Tier 1 capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized"	6.50%	6.50%
Tier 1 capital (to average assets), Ratio, Minimum To be Considered "Well Capitalized"	5.00%	5.00%

Common equity tier one capital required for capital adequacy to risk weighted assets.

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The amount of total capital as defined in the regulations.

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The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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Amount of Common Equity Tier One Risk-based Capital, as defined by regulatory framework.

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Percentage of Common Equity Tier One Risk-based Capital to total risk-weighted assets, as defined by regulatory framework.

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Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as adequately capitalized under regulatory framework for prompt corrective action.

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Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as well-capitalized under regulatory framework for prompt corrective action.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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The minimum amount of Tier 1 Risk Based Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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