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Note 12 - Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
(Dollars in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Minimum Required To Be |
|  |  |  |  |  |  |  |  |  | Minimum Required For |  |  | Well Capitalized Under Prompt |
|  | Actual |  |  | Capital Adequacy Purposes |  |  | Corrective Action Regulations |
At December 31, 2019 |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital to risk-weighted assets |  | $ | 110.8 |  |  |  | 11.8% |  |  | $ | 42.4 |  |  |  | 4.5% |  |  |  | N/A |  |  |  | N/A |
Tier 1 capital to risk-weighted assets |  | $ | 110.8 |  |  |  | 11.8% |  |  | $ | 56.5 |  |  |  | 6.0% |  |  |  | N/A |  |  |  | N/A |
Total capital to risk-weighted assets |  | $ | 119.8 |  |  |  | 12.7% |  |  | $ | 75.3 |  |  |  | 8.0% |  |  |  | N/A |  |  |  | N/A |
Tier 1 capital to adjusted average assets |  | $ | 110.8 |  |  |  | 8.5% |  |  | $ | 52.3 |  |  |  | 4.0% |  |  |  | N/A |  |  |  | N/A |
(Dollars in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Minimum Required To Be |
|  |  |  |  |  |  |  |  |  | Minimum Required For |  |  | Well Capitalized Under Prompt |
|  | Actual |  |  | Capital Adequacy Purposes |  |  | Corrective Action Regulations |
At December 31, 2018 |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital to risk-weighted assets |  | $ | 92.8 |  |  |  | 11.6% |  |  | $ | 26.1 |  |  |  | 4.5% |  |  |  | N/A |  |  |  | N/A |
Tier 1 capital to risk-weighted assets |  | $ | 92.8 |  |  |  | 11.6% |  |  | $ | 42.2 |  |  |  | 6.0% |  |  |  | N/A |  |  |  | N/A |
Total capital to risk-weighted assets |  | $ | 100.8 |  |  |  | 12.6% |  |  | $ | 64.2 |  |  |  | 8.0% |  |  |  | N/A |  |  |  | N/A |
Tier 1 capital to adjusted average assets |  | $ | 92.8 |  |  |  | 8.6% |  |  | $ | 43.2 |  |  |  | 4.0% |  |  |  | N/A |  |  |  | N/A |
(Dollars in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Minimum Required To Be |
|  |  |  |  |  |  |  |  |  | Minimum Required For |  |  | Well Capitalized Under Prompt |
|  | Actual |  |  | Capital Adequacy Purposes |  |  | Corrective Action Regulations |
At December 31, 2019 |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital to risk-weighted assets |  | $ | 108.9 |  |  |  | 11.6% |  |  | $ | 42.4 |  |  |  | 4.5% |  |  | $ | 61.2 |  |  |  | 6.5% |
Tier 1 capital to risk-weighted assets |  | $ | 108.9 |  |  |  | 11.6% |  |  | $ | 56.5 |  |  |  | 6.0% |  |  | $ | 75.3 |  |  |  | 8.0% |
Total capital to risk-weighted assets |  | $ | 117.9 |  |  |  | 12.5% |  |  | $ | 75.3 |  |  |  | 8.0% |  |  | $ | 94.1 |  |  |  | 10.0% |
Tier 1 capital to adjusted average assets |  | $ | 108.9 |  |  |  | 8.3% |  |  | $ | 52.3 |  |  |  | 4.0% |  |  | $ | 65.3 |  |  |  | 5.0% |
(Dollars in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Minimum Required To Be |
|  |  |  |  |  |  |  |  |  | Minimum Required For |  |  | Well Capitalized Under Prompt |
|  | Actual |  |  | Capital Adequacy Purposes |  |  | Corrective Action Regulations |
At December 31, 2018 |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital to risk-weighted assets |  | $ | 89.9 |  |  |  | 11.2% |  |  | $ | 36.2 |  |  |  | 4.5% |  |  | $ | 52.2 |  |  |  | 6.5% |
Tier 1 capital to risk-weighted assets |  | $ | 89.9 |  |  |  | 11.2% |  |  | $ | 48.2 |  |  |  | 6.0% |  |  | $ | 64.3 |  |  |  | 8.0% |
Total capital to risk-weighted assets |  | $ | 97.9 |  |  |  | 12.2% |  |  | $ | 64.3 |  |  |  | 8.0% |  |  | $ | 80.3 |  |  |  | 10.0% |
Tier 1 capital to adjusted average assets |  | $ | 89.9 |  |  |  | 8.4% |  |  | $ | 42.9 |  |  |  | 4.0% |  |  | $ | 53.6 |  |  |  | 5.0% |

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