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Capital and Regulatory Matters - Schedule of Actual and Required Capital Amounts and Ratios (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Capital and Regulatory Matters |  |
Tier-1 Leverage | $ 47,838 | $ 43,954
Tier 1 Leverage, ratio (as a percent) | 11.39% | 10.60%
Common Equity Tier 1 | $ 47,838 | $ 43,954
Common Equity Tier 1, ratio (as a percent) | 18.63% | 15.36%
Tier 1 | $ 47,838 | $ 43,954
Tier 1, ratio (as a percent) | 18.63% | 15.36%
Total Capital | $ 51,059 | $ 47,544
Total Capital, ratio (as a percent) | 19.88% | 16.62%
Leverage required for capital adequacy purposes | $ 16,798 | $ 16,594
Leverage required for capital adequacy purposes, ratio (as a percent) | 4.00% | 4.00%
Common Equity Tier 1 required for capital adequacy purposes | $ 11,557 | $ 12,875
Common Equity Tier 1 required for capital adequacy purposes, ratio (as a percent) | 4.50% | 4.50%
Tier 1 required for capital adequacy purposes | $ 15,409 | $ 17,166
Tier 1 required for capital adequacy purposes, ratio (as a percent) | 6.00% | 6.00%
Total capital required for capital adequacy purposes | $ 20,545 | $ 22,888
Total capital required for capital adequacy purposes, ratio (as a percent) | 8.00% | 8.00%

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