XML 104 R88.htm IDEA: XBRL DOCUMENT
v3.20.1

Commitments - Schedule of Financial Commitments whose Contractual Amount Represents Credit Risk (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Loss Contingencies [Line Items] |  |
Financial commitments, contractual amount, Fixed Rate | $ 58,274 | $ 70,145
Financial commitments, contractual amount, Variable Rate | 271,925 | 202,191
Commitments to Make Loans |  |
Loss Contingencies [Line Items] |  |
Financial commitments, contractual amount, Fixed Rate |  | 5,211
Financial commitments, contractual amount, Variable Rate | 167,496 | 125,610
Unused Lines of Credit |  |
Loss Contingencies [Line Items] |  |
Financial commitments, contractual amount, Fixed Rate | 55,789 | 61,191
Financial commitments, contractual amount, Variable Rate | 102,841 | 75,908
Commercial and Similar Letters of Credit |  |
Loss Contingencies [Line Items] |  |
Financial commitments, contractual amount, Fixed Rate |  | 1,042
Financial commitments, contractual amount, Variable Rate | 358 |
Standby Letters of Credit |  |
Loss Contingencies [Line Items] |  |
Financial commitments, contractual amount, Fixed Rate | 2,485 | 2,701
Financial commitments, contractual amount, Variable Rate | $ 1,230 | $ 673

X
- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=108315417&loc=d3e61044-112788 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108315417&loc=d3e61082-112788 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at interest rates that increase or decrease depending on certain facts or circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108315417&loc=d3e61082-112788 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=108315417&loc=d3e61044-112788 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommitmentsToExtendCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_UnusedLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=rbb_CommercialAndSimilarLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |