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Capital and Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2017
Capital and Regulatory Matters |
Schedule of actual and required capital amounts and ratios |
|  | Actual |  | Minimum Capital Requirements |  | Minimum Required To Be Well Capitalized Under Prompt Corrective Action Provisions |
|  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | (Dollars in thousands) |
December 31, 2017: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tier 1 (Leverage) |  | $ | 47,838 |  |  | 11.39% |  | $ | 16,798 |  |  | 4.0% |  | $ | 20,997 |  |  | 5.0% |
Common Equity Tier 1 |  | $ | 47,838 |  |  | 18.63% |  | $ | 11,557 |  |  | 4.5% |  | $ | 16,693 |  |  | 6.5% |
Tier 1 |  | $ | 47,838 |  |  | 18.63% |  | $ | 15,409 |  |  | 6.0% |  | $ | 20,545 |  |  | 8.0% |
Total Capital |  | $ | 51,059 |  |  | 19.88% |  | $ | 20,545 |  |  | 8.0% |  | $ | 25,681 |  |  | 10.0% |
December 31, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tier 1 (Leverage) |  | $ | 43,954 |  |  | 10.60% |  | $ | 16,594 |  |  | 4.0% |  | $ | 20,742 |  |  | 5.0% |
Common Equity Tier 1 |  | $ | 43,954 |  |  | 15.36% |  | $ | 12,875 |  |  | 4.5% |  | $ | 18,597 |  |  | 6.5% |
Tier 1 |  | $ | 43,954 |  |  | 15.36% |  | $ | 17,166 |  |  | 6.0% |  | $ | 22,888 |  |  | 8.0% |
Total Capital |  | $ | 47,544 |  |  | 16.62% |  | $ | 22,888 |  |  | 8.0% |  | $ | 28,610 |  |  | 10.0% |

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