XML 85 R71.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Note 6 - Loan Servicing (Details Textual) | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Loan Servicing Fees Net of Amortization | $ 2,576,000 | $ 2,209,000 | $ 684,000
Servicing Asset, Custodial Balance | 6,400,000 | 7,000,000 |
Servicing Asset at Amortized Cost, Recovery on Impairments |  |  | $ 417,000
Servicing Asset | 8,110,000 | 9,521,000 |
Mortgages [Member] |  |  |
Servicing Asset | $ 12,100,000 | $ 18,300,000 |
Mortgages [Member] | Measurement Input, Discount Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.1123 | 0.111 |
Mortgages [Member] | Measurement Input, Prepayment Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.0791 | 0.0773 |
Mortgages [Member] | Measurement Input, Default Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.001 | 0.001 |
Small Business Administration Loans [Member] |  |  |
Servicing Asset | $ 2,800,000 | $ 3,500,000 |
Small Business Administration Loans [Member] | Measurement Input, Discount Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.085 | 0.085 |
Small Business Administration Loans [Member] | Measurement Input, Prepayment Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.1768 | 0.1679 |
Small Business Administration Loans [Member] | Measurement Input, Default Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.0073 | 0.0037 |

X
- Definition The amount of loan servicing fees net of amortization. + References No definition available. + Details
Name: | rbb_LoanServicingFeesNetOfAmortization
Namespace Prefix: | rbb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of recovery on impairments of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References No definition available. + Details
Name: | rbb_ServicingAssetAtAmortizedCostRecoveryOnImpairments
Namespace Prefix: | rbb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate amount of servicing assets with custodial balances. + References No definition available. + Details
Name: | rbb_ServicingAssetCustodialBalance
Namespace Prefix: | rbb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-2 + Details
Name: | us-gaap_ServicingAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_ServicingAssetMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=rbb_SmallBusinessAdministrationLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |