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Note 17 - Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
|  | 2018 |
|  | Actual Regulatory Capital |  |  |  |  |  |  |  |  |
|  | Amount |  |  | Ratio |  |  | Minimum Requirement |  |  | To Be Well Capitalized |
|  | (Dollars in Thousands) |
Common equity Tier 1 capital (to risk-weighted assets) |  | $ | 70,177 |  |  |  | 12.62 | % |  |  | 6.375 | % |  |  | 6.50 | %
Tier 1 capital (to risk-weighted assets) |  |  | 70,177 |  |  |  | 12.62 | % |  |  | 7.875 | % |  |  | 8.00 | %
Total capital (to risk-weighted assets) |  |  | 75,232 |  |  |  | 13.53 | % |  |  | 9.875 | % |  |  | 10.00 | %
Tier 1 leverage (to average assets) |  |  | 70,177 |  |  |  | 8.96 | % |  |  | 4.00 | % |  |  | 5.00 | %
|  | 2017 |
|  | Actual Regulatory Capital |  |  |  |  |  |  |  |  |
|  | Amount |  |  | Ratio |  |  | Minimum Requirement |  |  | To Be Well Capitalized |
|  | (Dollars in Thousands) |
Common equity Tier 1 capital (to risk-weighted assets) |  | $ | 74,383 |  |  |  | 18.41 | % |  |  | 5.750 | % |  |  | 6.50 | %
Tier 1 capital (to risk-weighted assets) |  |  | 74,383 |  |  |  | 18.41 | % |  |  | 7.250 | % |  |  | 8.00 | %
Total capital (to risk-weighted assets) |  |  | 79,157 |  |  |  | 19.60 | % |  |  | 9.250 | % |  |  | 10.00 | %
Tier 1 leverage (to average assets) |  |  | 74,383 |  |  |  | 11.89 | % |  |  | 4.00 | % |  |  | 5.00 | %

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