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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2017
Regulatory Matters [Abstract] |
Summary of capital amounts and ratios of the Bank and the Company and the regulatory minimum requirements |
|  |  |  |  |  |  |  |  |  |  |  |  | To be well
|  |  |  |  |  |  |  |  |  |  |  |  | capitalized
|  |  |  |  |  |  | For capital |  |  | under prompt
|  |  |  |  |  |  | adequacy purposes |  |  | corrective action
| Actual |  |  | minimum |  | provisions minimum
(dollars in thousands) |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
As of December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to risk weighted assets) |  | $ | 175,016 |  | 12.99% |  | $ | 107,749 |  | 8.00% |  | $ | 134,686 |  | 10.00%
Tier 1 Capital (to risk weighted assets) |  |  | 159,493 |  | 11.84% |  |  | 80,812 |  | 6.00% |  |  | 107,749 |  | 8.00%
Common Equity Tier 1 Capital (to risk weighted assets) |  |  | 159,493 |  | 11.84% |  |  | 60,609 |  | 4.50% |  |  | 87,546 |  | 6.50%
Tier 1 Capital (to average assets) |  |  | 159,493 |  | 10.04% |  |  | 63,573 |  | 4.00% |  |  | 79,466 |  | 5.00%
The Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to risk weighted assets) |  |  | 178,665 |  | 13.27% |  |  | 107,749 |  | 8.00% |  |  | n/a |  | n/a
Tier 1 Capital (to risk weighted assets) |  |  | 163,142 |  | 12.11% |  |  | 80,812 |  | 6.00% |  |  | n/a |  | n/a
Common Equity Tier 1 Capital (to risk weighted assets) |  |  | 150,142 |  | 11.15% |  |  | 60,609 |  | 4.50% |  |  | n/a |  | n/a
Tier 1 Capital (to average assets) |  |  | 163,142 |  | 10.26% |  |  | 63,573 |  | 4.00% |  |  | n/a |  | n/a
|  |  |  |  |  |  |  |  |  |  |  |  | To be well |
|  |  |  |  |  |  |  |  |  |  |  |  | capitalized |
|  |  |  |  |  |  |  | For capital |  |  | under prompt |
|  |  |  |  |  |  |  | adequacy purposes |  |  | corrective action |
|  |  |  |  | Actual |  |  | minimum |  |  | provisions minimum |
(dollars in thousands) |  | Amount |  | Ratio |  |  | Amount |  | Ratio |  |  | Amount |  | Ratio |
As of December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to risk weighted assets) |  | $ | 132,839 |  | 11.69 | % |  | $90,910 |  | 8.00 | % |  | $113,628 |  | 10.00 | %
Tier 1 Capital (to risk weighted assets) |  |  | 118,626 |  | 10.44 | % |  | 68,183 |  | 6.00 | % |  | 90,910 |  | 8.00 | %
Common Equity Tier 1 Capital (to risk weighted assets) |  |  | 118,626 |  | 10.44 | % |  | 51,137 |  | 4.50 | % |  | 73,864 |  | 6.50 | %
Tier 1 Capital (to average assets) |  |  | 118,626 |  | 9.08 | % |  | 52,273 |  | 4.00 | % |  | 65,342 |  | 5.00 | %
The Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to risk weighted assets) |  |  | 137,588 |  | 12.11 | % |  | 90,910 |  | 8.00 | % |  | n/a |  | n/a |
Tier 1 Capital (to risk weighted assets) |  |  | 123,375 |  | 10.86 | % |  | 68,183 |  | 6.00 | % |  | n/a |  | n/a |
Common Equity Tier 1 Capital (to risk weighted assets) |  |  | 110,375 |  | 9.71 | % |  | 51,137 |  | 4.50 | % |  | n/a |  | n/a |
Tier 1 Capital (to average assets) |  |  | 123,375 |  | 9.42 | % |  | 52,392 |  | 4.00 | % |  | n/a |  | n/a |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826 + Details
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