XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.23.1

Commitments and Contingencies (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Distribution of Undisbursed Loan Commitments | The following table presents the distribution of undisbursed credit-related commitments as of March 31, 2023 and December 31, 2022:
($ in thousands) |  | March 31, 2023 |  | December 31, 2022
Loan commitments |  | $ | 261,501 |  |  | $ | 265,110 |
Standby letter of credit |  | 5,959 |  |  | 5,286 |
Commercial letter of credit |  | 341 |  |  | 451 |
Total undisbursed credit related commitments |  | $ | 267,801 |  |  | $ | 270,847 |
Schedule of Balance and Total Unfunded Commitments Related to Investment in Low Income Housing Partnerships | The following table shows the balance of the investments in low-income housing partnerships and the total unfunded commitments related to the investments in low-income housing partnerships as of March 31, 2023 and December 31, 2022:
($ in thousands) |  | March 31, 2023 |  | December 31, 2022
Investments in low-income housing partnerships |  | $ | 11,850 |  |  | $ | 12,212 |
Unfunded commitments to fund investments for low-income housing partnerships |  | 8,635 |  |  | 8,748 |

X
- Definition Schedule of balance and total unfunded commitments related to investment in low income housing partnerships. + References No definition available. + Details
Name: | opbk_ScheduleOfBalanceAndTotalUnfundedCommitmentsRelatedToInvestmentInLowIncomeHousingPartnershipsTableTableTextBlock
Namespace Prefix: | opbk_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 + Details
Name: | us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration