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Regulatory Matters (Tables) | 9 Months Ended
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Sep. 30, 2017
Regulated Operations [Abstract] |
Summary of Actual Capital Amounts and Ratios and Related Regulatory Requirements | The following table sets forth RBB Bancorp's consolidated and the Bank's actual capital amounts and ratios and related regulatory requirements for the Bank at September 30, 2017:
|  |  |  |  |  |  |  |  |  | Amount of Capital Required |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | To Be Well- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Capitalized |
|  |  |  |  |  |  |  |  |  | For Capital |  |  | Under Prompt |
|  |  |  |  |  |  |  |  |  | Adequacy |  |  | Corrective |
|  | Actual |  |  | Purposes |  |  | Provisions |
(dollars in thousands) |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
As of September 30, 2017: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tier 1 Leverage Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 232,521 |  |  |  | 14.91 | % |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 227,104 |  |  |  | 14.57 | % |  | $ | 62,363 |  |  |  | 4.0% |  |  | $ | 77,953 |  |  |  | 5.0% |
Common Equity Tier 1 Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 229,244 |  |  |  | 18.23 | % |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 227,104 |  |  |  | 18.13 | % |  | $ | 56,377 |  |  |  | 4.5% |  |  | $ | 81,433 |  |  |  | 6.5% |
Tier 1 Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 232,521 |  |  |  | 18.49 | % |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 227,104 |  |  |  | 18.13 | % |  | $ | 75,169 |  |  |  | 6.0% |  |  | $ | 100,225 |  |  |  | 8.0% |
Total Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 293,922 |  |  |  | 23.37 | % |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 239,013 |  |  |  | 19.08 | % |  | $ | 100,225 |  |  |  | 8.0% |  |  | $ | 125,282 |  |  |  | 10.0% |
The following table sets forth RBB Bancorp's consolidated and the Bank's actual capital amounts and ratios and related regulatory requirements for the Bank at December 31, 2016:
|  |  |  |  |  |  |  |  |  | Amount of Capital Required |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | To Be Well- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Capitalized |
|  |  |  |  |  |  |  |  |  | For Capital |  |  | Under Prompt |
|  |  |  |  |  |  |  |  |  | Adequacy |  |  | Corrective |
|  | Actual |  |  | Purposes |  |  | Provisions |
(dollars in thousands) |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
As of December 31, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tier 1 Leverage Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 153,682 |  |  |  | 11.00% |  |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 178,645 |  |  |  | 12.81% |  |  | $ | 55,777 |  |  |  | 4.0% |  |  | $ | 69,722 |  |  |  | 5.0% |
Common Equity Tier 1 Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 150,786 |  |  |  | 13.30% |  |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 178,645 |  |  |  | 15.81% |  |  | $ | 50,860 |  |  |  | 4.5% |  |  | $ | 73,464 |  |  |  | 6.5% |
Tier 1 Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 153,682 |  |  |  | 13.56% |  |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 178,645 |  |  |  | 15.81% |  |  | $ | 67,813 |  |  |  | 6.0% |  |  | $ | 90,417 |  |  |  | 8.0% |
Total Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 217,244 |  |  |  | 19.17% |  |  | NA |  |  | NA |  |  | NA |  |  | NA |
Bank |  | $ | 192,784 |  |  |  | 17.06% |  |  | $ | 90,417 |  |  |  | 8.0% |  |  | $ | 113,021 |  |  |  | 10.0% |

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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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