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Regulatory Matters (Tables)

9 Months Ended

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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- References

No definition available.

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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

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