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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2018
Regulatory Matters [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
|  | Actual |  |  | For Capital Adequacy Purposes |  |  | To Be Well Capitalized Under Prompt Corrective Action Procedures |
($ in thousands) |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
As of December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tier I Capital to average assets |  | $ | 116,884 |  |  |  | 11.36 | % |  | $ | 41,165 |  |  |  | 4.0 | % |  | $ | 51,456 |  |  |  | 5.0 | %
Tier I Common equity capital to risk-weighted assets |  |  | 116,884 |  |  |  | 12.46 | % |  |  | 42,204 |  |  |  | 4.5 | % |  |  | 60,962 |  |  |  | 6.5 | %
Tier I Capital to risk-weighted assets |  |  | 116,884 |  |  |  | 12.46 | % |  |  | 56,273 |  |  |  | 6.0 | % |  |  | 75,030 |  |  |  | 8.0 | %
Total Risk-based capital to risk-weighted assets |  |  | 125,639 |  |  |  | 13.40 | % |  |  | 75,030 |  |  |  | 8.0 | % |  |  | 93,788 |  |  |  | 10.0 | %
As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tier I Capital to average assets |  | $ | 110,022 |  |  |  | 11.23 | % |  | $ | 39,183 |  |  |  | 4.0 | % |  | $ | 48,979 |  |  |  | 5.0 | %
Tier I Common equity capital to risk-weighted assets |  |  | 110,022 |  |  |  | 12.57 | % |  |  | 39,386 |  |  |  | 4.5 | % |  |  | 56,890 |  |  |  | 6.5 | %
Tier I Capital to risk-weighted assets |  |  | 110,022 |  |  |  | 12.57 | % |  |  | 52,514 |  |  |  | 6.0 | % |  |  | 70,019 |  |  |  | 8.0 | %
Total Risk-based capital to risk-weighted assets |  |  | 118,189 |  |  |  | 13.50 | % |  |  | 70,019 |  |  |  | 8.0 | % |  |  | 87,524 |  |  |  | 10.0 | %

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