XML 99 R88.htm IDEA: XBRL DOCUMENT
v3.20.2

Note 17 - Fair Value Measurements - Summary of Quantitative Information About Impaired Loans and OREO Non-recurring Level 3 Fair Value Measurements (Details) $ in Thousands | Sep. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | ---
Assets measured at fair value |  | $ 126,069
Fair Value, Nonrecurring [Member] |  |
Assets measured at fair value | $ 293 |
Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member] |  |
Assets measured at fair value | $ 293 | $ 293
Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member] | Minimum [Member] | Measurement Input, Comparability Adjustment [Member] |  |
Adjustment | 0.05 | 0.05
Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member] | Maximum [Member] | Measurement Input, Comparability Adjustment [Member] |  |
Adjustment | 0.06 | 0.06

X
- Definition Value of input used to measure alternative investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AlternativeInvestmentMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbb_OtherRealEstateOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputComparabilityAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |