XML 84 R74.htm IDEA: XBRL DOCUMENT
v3.23.1

Fair Value of Financial Instruments - Schedule of Increase (Decrease) in Value of Certain Assets Held at End of Respective Reporting Periods Presented for Which a Nonrecurring Fair Value Adjustment (Details) - Fair Value, Measurements, Nonrecurring - Loans Receivable - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Financing Receivable Impaired [Line Items] |  |
Individually evaluated loans: | $ 13 | $ 7
SBA—real estate |  |
Financing Receivable Impaired [Line Items] |  |
Individually evaluated loans: | 2 | 7
C&I |  |
Financing Receivable Impaired [Line Items] |  |
Individually evaluated loans: | $ 11 | $ 0

X
- Definition Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_LoansReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=opbk_SBALoansRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=opbk_CIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |