$OPBK
OP Bancorp Stock $opbk

$opbk Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000162828024047832 Filed on November 14, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$889.0K
YoY Change		54.61%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization		$335.0K
YoY Change		8.77%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income		$7.578M
YoY Change		7.95%
Income Tax		$2.142M
% Of Pretax Income		28.27%
Net Earnings		$5.436M
YoY Change		6.15%
Net Earnings / Revenue		611.47%
Basic Earnings Per Share		$0.36
Diluted Earnings Per Share		$0.37
COMMON SHARES
Basic Shares Outstanding	14.81M shares	14.81M shares
Diluted Shares Outstanding		14.81M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$166.8M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment		$12.83M
YoY Change		138.58%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets		$12.29M
YoY Change		-18.62%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets		$2.388B
YoY Change		11.45%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable		$19.48M
YoY Change		43.26%
Accrued Expenses		$8.417M
YoY Change		-14.98%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities		$27.90M
YoY Change		18.72%
LONG-TERM LIABILITIES
Long-Term Debt		$0.00
YoY Change
Other Long-Term Liabilities		$16.87M
YoY Change		14.79%
Total Long-Term Liabilities		$16.87M
YoY Change		14.79%
TOTAL LIABILITIES
Total Short-Term Liabilities		$27.90M
Total Long-Term Liabilities		$16.87M
Total Liabilities		$2.184B
YoY Change		11.54%
SHAREHOLDERS EQUITY
Retained Earnings		$131.6M
YoY Change		12.01%
Common Stock		$85.41M
YoY Change		-3.2%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity		$203.6M
YoY Change
Total Liabilities & Shareholders Equity		$2.388B
YoY Change		11.45%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$5.436M
YoY Change		6.15%
Depreciation, Depletion And Amortization		$335.0K
YoY Change		8.77%
Cash From Operating Activities		$13.39M
YoY Change		-13.2%
INVESTING ACTIVITIES
Capital Expenditures		$580.0K
YoY Change		0.0%
Acquisitions
YoY Change
Other Investing Activities		-$55.69M
YoY Change		51.65%
Cash From Investing Activities		-$56.27M
YoY Change		50.77%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities		81.95M
YoY Change		-608.08%
NET CHANGE
Cash From Operating Activities		13.39M
Cash From Investing Activities		-56.27M
Cash From Financing Activities		81.95M
Net Change In Cash		39.08M
YoY Change		-202.79%
FREE CASH FLOW
Cash From Operating Activities		$13.39M
Capital Expenditures		$580.0K
Free Cash Flow		$12.81M
YoY Change		-13.72%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	us-gaap	Noninterest Income NoninterestIncome	10501000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	21947000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	1706000	usd
	us-gaap	Occupancy Net OccupancyNet	4991000	usd
	us-gaap	Occupancy Net OccupancyNet	4874000	usd
CY2024Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	634000	usd
CY2023Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	369000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1651000	usd
CY2024Q3	us-gaap	Professional Fees ProfessionalFees	346000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	440000	usd
CY2024Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	391000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	5436000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	183770000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	1765845000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	21993000	usd
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Registrant Name EntityRegistrantName	OP BANCORP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	81-3114676
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 500
	dei	Entity Address City Or Town EntityAddressCityOrTown	Los Angeles
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	90017
	dei	City Area Code CityAreaCode	213
	dei	Local Phone Number LocalPhoneNumber	892-9999
	dei	Trading Symbol TradingSymbol	OPBK
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	91216000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	194250000	usd
CY2023Q4	us-gaap	Other Investments OtherInvestments	16276000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1795000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	21993000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5248000	usd
CY2023Q4	us-gaap	Interest Receivable InterestReceivable	8259000	usd
CY2023Q4	us-gaap	Servicing Asset ServicingAsset	11741000	usd
CY2023Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	22233000	usd
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	13309000	usd
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	7870000	usd
CY2024Q3	us-gaap	Other Assets OtherAssets	19673000	usd
CY2024Q3	us-gaap	Assets Assets	2387980000	usd
CY2024Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	561801000	usd
CY2024Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	564547000	usd
CY2024Q3	us-gaap	Deposits Deposits	2064603000	usd
CY2024Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	75000000	usd
CY2024Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	19483000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	8417000	usd
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	14811671	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	73697000	usd
CY2024Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	11713000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	131588000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-13395000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	203603000	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2387980000	usd
CY2024Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	31885000	usd
CY2024Q3	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	1626000	usd
CY2023Q3	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	1519000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	4676000	usd
CY2024Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1788000	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	889000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	575000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2294000	usd
CY2024Q3	opbk	Loan Servicing Fees Net Of Amortization LoanServicingFeesNetOfAmortization	693000	usd
CY2023Q3	opbk	Loan Servicing Fees Net Of Amortization LoanServicingFeesNetOfAmortization	468000	usd
	opbk	Loan Servicing Fees Net Of Amortization LoanServicingFeesNetOfAmortization	2040000	usd
CY2024Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2088000	usd
CY2023Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1179000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	6116000	usd
CY2024Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	570000	usd
CY2023Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	379000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	1560000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	4240000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	2601000	usd
	us-gaap	Noninterest Income NoninterestIncome	12010000	usd
CY2024Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	8031000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7014000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	23440000	usd
CY2024Q3	us-gaap	Occupancy Net OccupancyNet	1676000	usd
	us-gaap	Professional Fees ProfessionalFees	1147000	usd
CY2023Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	333000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1143000	usd
CY2024Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	151000	usd
CY2023Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	207000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	451000	usd
CY2024Q3	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	154000	usd
CY2023Q3	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	164000	usd
	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	489000	usd
CY2024Q3	opbk	Noninterest Expense Foundation Donation And Other Contributions NoninterestExpenseFoundationDonationAndOtherContributions	549000	usd
CY2023Q3	opbk	Noninterest Expense Foundation Donation And Other Contributions NoninterestExpenseFoundationDonationAndOtherContributions	529000	usd
	opbk	Noninterest Expense Foundation Donation And Other Contributions NoninterestExpenseFoundationDonationAndOtherContributions	1628000	usd
CY2024Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	788000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7578000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7020000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	22413000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2142000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1899000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6315000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	5121000	usd
	us-gaap	Net Income Loss NetIncomeLoss	16098000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3818000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3246000	usd
	opbk	Payments To Acquire Loans And Servicing Rights PaymentsToAcquireLoansAndServicingRights	6421000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	747000	usd
	opbk	Payments For Proceeds From Investment In Low Income Housing Partnerships PaymentsForProceedsFromInvestmentInLowIncomeHousingPartnerships	3318000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-169474000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	257045000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	160000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	usd
	dei	Security12b Title Security12bTitle	Common Stock, no par value
CY2024Q3	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	343188000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	2184377000	usd
CY2023Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2024Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2024Q3	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	14811671	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	15000436	shares
CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	28250000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	92632000	usd
CY2023Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1417000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	5261000	usd
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	35299000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	31186000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	102569000	usd
CY2024Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	17921000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	13006000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	50939000	usd
CY2024Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	872000	usd
CY2023Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	867000	usd
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	2951000	usd
CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	16506000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	17313000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	48679000	usd
CY2024Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	448000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1359000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1210000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	15954000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	47469000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2126000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	12720000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	11535000	usd
	us-gaap	Noninterest Expense NoninterestExpense	37066000	usd
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	5436000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	5121000	usd
	us-gaap	Net Income Loss NetIncomeLoss	16098000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2056000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	9254000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	18154000	usd
CY2024Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2024Q3	us-gaap	Dividends Cash DividendsCash	1777000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	203603000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	5121000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3246000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	154000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	323000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2023Q3	us-gaap	Dividends Cash DividendsCash	1815000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	184307000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	192626000	usd
	us-gaap	Net Income Loss NetIncomeLoss	18746000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3571000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	790000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	961000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	75000	usd
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	87000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	91216000	usd
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	14811671	shares
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	166756000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	199373000	usd
CY2024Q3	us-gaap	Other Investments OtherInvestments	16520000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	8160000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	22960000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4961000	usd
CY2024Q3	us-gaap	Interest Receivable InterestReceivable	9479000	usd
CY2024Q3	us-gaap	Servicing Asset ServicingAsset	10877000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	22739000	usd
CY2024Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	12288000	usd
CY2024Q3	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	1237000	usd
CY2023Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	0	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8497000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	31054000	usd
CY2023Q4	us-gaap	Assets Assets	2147730000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	522751000	usd
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	433892000	usd
CY2024Q3	opbk	Interest Bearing Deposit Other Time Deposit InterestBearingDepositOtherTimeDeposit	595067000	usd
CY2023Q4	us-gaap	Deposits Deposits	1807558000	usd
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	105000000	usd
CY2023Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	12628000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9341000	usd
CY2024Q3	us-gaap	Other Liabilities OtherLiabilities	16874000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	20577000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	1955104000	usd
CY2024Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	76280000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	10942000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	120855000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-15451000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	192626000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2147730000	usd
	us-gaap	Net Income Loss NetIncomeLoss	18746000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.21
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.21
	us-gaap	Net Income Loss NetIncomeLoss	18746000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5101000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3246000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3673000	usd
	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2023Q4	opbk	Interest Bearing Deposit Other Time Deposit InterestBearingDepositOtherTimeDeposit	451897000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	81549000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	4647000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	3686000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	89882000	usd
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	2117000	usd
CY2024Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	18793000	usd
CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	13873000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	53890000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	37425000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	52457000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1021000	usd
CY2024Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	16058000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	51436000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1566000	usd
	opbk	Loan Servicing Fees Net Of Amortization LoanServicingFeesNetOfAmortization	1909000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5847000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	1179000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1465000	usd
	us-gaap	Professional Fees ProfessionalFees	1180000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1220000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	528000	usd
	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	535000	usd
	opbk	Noninterest Expense Foundation Donation And Other Contributions NoninterestExpenseFoundationDonationAndOtherContributions	1876000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	773000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2118000	usd
	us-gaap	Noninterest Expense NoninterestExpense	35743000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	26194000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-1283000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-1617000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3571000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15175000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	5436000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3818000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	176916000	usd
CY2023Q2	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	12654000	usd
	dei	Entity Central Index Key EntityCentralIndexKey	0001722010
CY2024Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List FinancingReceivableAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#InterestReceivable
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List FinancingReceivableAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#InterestReceivable
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1000 Wilshire Blvd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	1908047000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	1743852000	usd
CY2023Q4	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	399018000	usd
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	15000436	shares
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	35308000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7448000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3571000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1875000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	195906000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	272000	usd
CY2024Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	52000	usd
	us-gaap	Net Income Loss NetIncomeLoss	16098000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2056000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	23000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	908000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2743000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.36
	us-gaap	Dividends Cash DividendsCash	5365000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	203603000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2582000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.36
	us-gaap	Dividends Cash DividendsCash	5469000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	184307000	usd
	us-gaap	Net Income Loss NetIncomeLoss	16098000	usd
	us-gaap	Net Income Loss NetIncomeLoss	18746000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1210000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1021000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1034000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	975000	usd
	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	53000	usd
	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	187000	usd
	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	2945000	usd
	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	3302000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	1736000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	2199000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1552000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1084000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	908000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	961000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-521000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	753000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	6116000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5847000	usd
	opbk	Bank Owned Life Insurance Income Expense BankOwnedLifeInsuranceIncomeExpense	506000	usd
	opbk	Bank Owned Life Insurance Income Expense BankOwnedLifeInsuranceIncomeExpense	458000	usd
	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	77000	usd
	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	-106000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	102251000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	64362000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	99921000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	112070000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1220000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	816000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10085000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2929000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	6855000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	10781000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2180000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-4200000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	26054000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	69175000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	158865000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	57247000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	19121000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	18887000	usd
	opbk	Payments To Acquire Loans And Servicing Rights PaymentsToAcquireLoansAndServicingRights	21916000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	19082000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	5647000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	63000	usd
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	4044000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1953000	usd
	opbk	Payments For Proceeds From Investment In Low Income Housing Partnerships PaymentsForProceedsFromInvestmentInLowIncomeHousingPartnerships	1563000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-73546000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-60600000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	888000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	95000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	30000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2743000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2582000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5365000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5469000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	137000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	98000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	218960000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	27139000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	75540000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	22768000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	82972000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	166756000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	105740000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	6936000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	8377000	usd
	us-gaap	Interest Paid Net InterestPaidNet	47035000	usd
	us-gaap	Interest Paid Net InterestPaidNet	26644000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	871000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1369000	usd
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	1077000	usd
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	usd
CY2024Q3	opbk	Number Of Full Service Branches NumberOfFullServiceBranches	11	branch
	opbk	Number Of Loan Production Offices NumberOfLoanProductionOffices	5	office
	us-gaap	Derivatives Methods Of Accounting Hedging Derivatives DerivativesMethodsOfAccountingHedgingDerivatives	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:112%">Accounting Policy for Derivative Instruments and Hedging Activities</span></div><div><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">FASB ASC 815, </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Derivatives and Hedging</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> (“ASC 815”), provides the disclosure requirements for derivatives and hedging activities with the intent to provide users of financial statements with an enhanced understanding of: (a) how and why an entity uses derivative instruments, (b) how the entity accounts for derivative instruments and related hedged items, and (c) how derivative instruments and related hedged items affect an entity’s financial position, financial performance, and cash flows. Further, qualitative disclosures are required that explain the Company’s objectives and strategies for using derivatives, as well as quantitative disclosures about the fair value of and gains and losses on derivative instruments, and disclosures about credit-risk-related contingent features in derivative instruments.</span></div><div><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">As required by ASC 815, the Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risk, even though hedge accounting does not apply, or the Company elects not to apply hedge accounting. For a fair value hedge, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same period during which the hedged transaction affects earnings. Changes in fair value of derivatives not designated are reported currently in earnings, as non-interest income. </span></div><div style="text-align:justify;text-indent:36pt"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings.</span></div><div><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In accordance with the FASB’s fair value measurement guidance in Accounting Standards Update ("ASU") No. 2011-04, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.</span></div>
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	216094000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1314000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	18035000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	199373000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	216186000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	256000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	22192000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	194250000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2024Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	976000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	950000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	2608000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	2443000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	212510000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	195980000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	216094000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	199373000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	135345000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	18035000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	135345000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	18035000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	33769000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	237000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	143352000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	21955000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	177121000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	22192000	usd
CY2024Q3	opbk	Debt Securities Available For Sale Number Of Positions DebtSecuritiesAvailableForSaleNumberOfPositions	90	loan
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	77	loan
CY2024Q3	opbk	Debt Securities Issued By Government Sponsored Agencies Percentage DebtSecuritiesIssuedByGovernmentSponsoredAgenciesPercentage	0.97
CY2024Q3	opbk	Debt Securities Tax Exempt Municipal Securities Percentage DebtSecuritiesTaxExemptMunicipalSecuritiesPercentage	0.03
CY2024Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	12615000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	12528000	usd
CY2024Q3	opbk	Pacific Coast Bankers Bank Stock PacificCoastBankersBankStock	190000	usd
CY2023Q4	opbk	Pacific Coast Bankers Bank Stock PacificCoastBankersBankStock	190000	usd
CY2024Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	100000	usd
CY2023Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	95000	usd
CY2024Q3	us-gaap	Other Investments OtherInvestments	16520000	usd
CY2023Q4	us-gaap	Other Investments OtherInvestments	16276000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3600000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3500000	usd
CY2024Q3	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	127000	usd
CY2023Q3	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-106000	usd
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	77000	usd
	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-105000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	1931007000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	22960000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	1908047000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	1743852000	usd
CY2024Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-260000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	140000	usd
	opbk	Allowances For Credit Loss Reversion Period Number Of Past Due Days AllowancesForCreditLossReversionPeriodNumberOfPastDueDays	P90D
CY2024Q3	opbk	Allowance For Credit Loss Reversion Period Baseline Scenario AllowanceForCreditLossReversionPeriodBaselineScenario	P1Y
CY2024Q3	opbk	Allowances For Credit Loss Reversion Period Adverse Scenario AllowancesForCreditLossReversionPeriodAdverseScenario	P2Y
CY2024Q3	opbk	Allowance For Credit Loss Reversion Period Baseline Scenario AllowanceForCreditLossReversionPeriodBaselineScenario	P1Y
CY2024Q3	opbk	Allowances For Credit Loss Reversion Period Adverse Scenario AllowancesForCreditLossReversionPeriodAdverseScenario	P2Y
	opbk	Financing Receivable Allowance For Credit Loss Number Of Matrix Factors FinancingReceivableAllowanceForCreditLossNumberOfMatrixFactors	9	factor
	opbk	Financing Receivable Nonaccrual Loans Risk Characteristics Threshold FinancingReceivableNonaccrualLoansRiskCharacteristicsThreshold	500000	usd
	opbk	Financing Receivable Nonaccrual Loans Risk Characteristics Threshold FinancingReceivableNonaccrualLoansRiskCharacteristicsThreshold	500000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	22760000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	234000	usd
CY2024Q3	opbk	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff Including Prior Year Reversal FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffIncludingPriorYearReversal	40000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	6000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	22960000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	20802000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	1303000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	492000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	4000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	21617000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	21993000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	1054000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	108000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	21000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	22960000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	19241000	usd
	opbk	Financing Receivable Excluding Accrued Interest Credit Loss Impact Of Cecl Adoption FinancingReceivableExcludingAccruedInterestCreditLossImpactOfCECLAdoption	1924000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	1045000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	628000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	35000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	21617000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	2971000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	649000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3620000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2024Q3	opbk	Financing Receivable Excluding Accrued Interest Past Due FinancingReceivableExcludingAccruedInterestPastDue	3620000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	2705000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	3377000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	6082000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2023Q4	opbk	Financing Receivable Excluding Accrued Interest Past Due FinancingReceivableExcludingAccruedInterestPastDue	6082000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	1931007000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	1765845000	usd
CY2024Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	8400000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	7300000	usd
CY2024Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1871000	usd
CY2023Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	121000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2266000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	822000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Modified Increase Decrease From Modification FinancingReceivableExcludingAccruedInterestModifiedIncreaseDecreaseFromModification	2000000.0	usd
CY2024Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	3397000	usd
CY2023Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	823000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	273748000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	217330000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	608562000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	305465000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	134177000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	222060000	usd
CY2024Q3	opbk	Financing Receivable Excluding Accrued Interests Credit Loss Impact Of Cecl Adoption FinancingReceivableExcludingAccruedInterestsCreditLossImpactOfCECLAdoption	167343000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	2322000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	1931007000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	32000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	66000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	10000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	108000	usd
CY2024Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	8400000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	221745000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	582171000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	284271000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	145890000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	178838000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	272711000	usd
CY2023Q4	opbk	Financing Receivable Excluding Accrued Interests Credit Loss Impact Of Cecl Adoption FinancingReceivableExcludingAccruedInterestsCreditLossImpactOfCECLAdoption	77658000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	2561000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	1765845000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	17000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	457000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	247000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	91000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	52000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	864000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	7300000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	17943000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	17453000	usd
CY2024Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12982000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12205000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4961000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5248000	usd
CY2024Q3	us-gaap	Depreciation Depreciation	335000	usd
CY2023Q3	us-gaap	Depreciation Depreciation	367000	usd
	us-gaap	Depreciation Depreciation	1000000.0	usd
	us-gaap	Depreciation Depreciation	1000000.0	usd
CY2024Q3	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0	usd
CY2023Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0	usd
CY2024Q2	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	11043000	usd
CY2023Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	11741000	usd
CY2022Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	12759000	usd
CY2024Q3	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	949000	usd
CY2023Q3	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	1228000	usd
	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	2945000	usd
	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	3302000	usd
CY2024Q3	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	10877000	usd
CY2023Q3	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	11931000	usd
CY2024Q3	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	10877000	usd
CY2023Q3	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	11931000	usd
CY2024Q3	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	16500000	usd
CY2023Q3	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	17000000.0	usd
CY2024Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	564500000	usd
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	433900000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Remainder Of Fiscal Year TimeDepositMaturitiesRemainderOfFiscalYear	467121000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	672935000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	18802000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	257000	usd
CY2024Q3	opbk	Time Deposit Maturities Year Four And Thereafter TimeDepositMaturitiesYearFourAndThereafter	499000	usd
CY2024Q3	us-gaap	Time Deposits TimeDeposits	1159614000	usd
CY2024Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	75000000.0	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Interest Rate FederalHomeLoanBankAdvancesInterestRate	0.0422
	opbk	Federal Home Loan Bank Advances Remaining Term FederalHomeLoanBankAdvancesRemainingTerm	P0Y7M6D
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	105000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Interest Rate FederalHomeLoanBankAdvancesInterestRate	0.0465
CY2023	opbk	Federal Home Loan Bank Advances Remaining Term FederalHomeLoanBankAdvancesRemainingTerm	P0Y10M24D
CY2024Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	100000000.0	usd
CY2023Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	67000000.0	usd
CY2024Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	705399000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2100000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1900000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6300000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7400000	usd
CY2024Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.283
CY2023Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.271
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.282
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.284
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2024Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2024Q3	us-gaap	Other Commitment OtherCommitment	262592000	usd
CY2023Q4	us-gaap	Other Commitment OtherCommitment	264355000	usd
CY2024Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	15335000	usd
CY2023Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	16887000	usd
CY2024Q3	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	8587000	usd
CY2023Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	11905000	usd
CY2024Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	517000	usd
CY2023Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	361000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1600000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1100000	usd
CY2024Q3	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	655000	usd
CY2023Q3	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	456000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	2000000.0	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	1400000	usd
CY2024Q3	opbk	Share Based Compensation Arrangement By Share Based Payment Award Number Of Plans ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans	2	plan
CY2024Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	272000	usd
CY2023Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	323000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	908000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	961000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	166756000	usd
CY2024Q3	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	8814000	usd
CY2024Q3	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	2021543000	usd
CY2024Q3	opbk	Accrued Interest Receivable Fair Value Disclosure AccruedInterestReceivableFairValueDisclosure	9479000	usd
CY2024Q3	opbk	Time Deposits Placed Fair Value Disclosure TimeDepositsPlacedFairValueDisclosure	100000	usd
CY2024Q3	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	16500000	usd
CY2024Q3	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	2064603000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	74992000	usd
CY2024Q3	opbk	Accrued Interest Payable Fair Value Disclosure AccruedInterestPayableFairValueDisclosure	19483000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	91216000	usd
CY2023Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	1793258000	usd
CY2023Q4	opbk	Accrued Interest Receivable Fair Value Disclosure AccruedInterestReceivableFairValueDisclosure	8259000	usd
CY2023Q4	opbk	Time Deposits Placed Fair Value Disclosure TimeDepositsPlacedFairValueDisclosure	95000	usd
CY2023Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	17218000	usd
CY2023Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	1808444000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	104231000	usd
CY2023Q4	opbk	Accrued Interest Payable Fair Value Disclosure AccruedInterestPayableFairValueDisclosure	12628000	usd
CY2024Q3	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	-279000	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	usd
CY2024Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	usd
CY2024Q3	us-gaap	Derivative Asset After Offset Subject To Master Netting Arrangement DerivativeAssetAfterOffsetSubjectToMasterNettingArrangement	0	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	0	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2024Q3	us-gaap	Derivative Asset Fair Value After Offset And Deduction Subject To Master Netting Arrangement DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	usd
CY2024Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	usd
CY2024Q3	us-gaap	Derivative Asset After Offset Subject To Master Netting Arrangement DerivativeAssetAfterOffsetSubjectToMasterNettingArrangement	0	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	0	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2024Q3	us-gaap	Derivative Asset Fair Value After Offset And Deduction Subject To Master Netting Arrangement DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1486000	usd
CY2024Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	usd
CY2024Q3	us-gaap	Derivative Liability After Offset Subject To Master Netting Arrangement DerivativeLiabilityAfterOffsetSubjectToMasterNettingArrangement	1486000	usd
CY2024Q3	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	0	usd
CY2024Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1486000	usd
CY2024Q3	us-gaap	Derivative Liability Fair Value After Offset And Deduction Subject To Master Netting Arrangement DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1486000	usd
CY2024Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	usd
CY2024Q3	us-gaap	Derivative Liability After Offset Subject To Master Netting Arrangement DerivativeLiabilityAfterOffsetSubjectToMasterNettingArrangement	1486000	usd
CY2024Q3	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	0	usd
CY2024Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1486000	usd
CY2024Q3	us-gaap	Derivative Liability Fair Value After Offset And Deduction Subject To Master Netting Arrangement DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement	0	usd
CY2024Q3	opbk	Risk Weighted Assets Capital Conservation Buffer Percentage RiskWeightedAssetsCapitalConservationBufferPercentage	0.0250
CY2024Q3	us-gaap	Capital Capital	240012000	usd
CY2024Q3	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1279
CY2024Q3	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	217123000	usd
CY2024Q3	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1157
CY2024Q3	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	217123000	usd
CY2024Q3	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1157
CY2024Q3	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	217123000	usd
CY2024Q3	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0930
CY2023Q4	us-gaap	Capital Capital	229544000	usd
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1377
CY2023Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	208707000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1252
CY2023Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	208707000	usd
CY2023Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1252
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	208707000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0957
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	5436000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	5121000	usd
	us-gaap	Net Income Loss NetIncomeLoss	16098000	usd
	us-gaap	Net Income Loss NetIncomeLoss	18746000	usd
CY2024Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	93000	usd
CY2023Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	96000	usd
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	294000	usd
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	379000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5343000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5025000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15804000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18367000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	14812118	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15131587	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	14890479	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15149203	shares
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.21
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	5343000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	5025000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	15804000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	18367000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	14812118	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15131587	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	14890479	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15149203	shares
CY2024Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	8990	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	51409	shares
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	14812118	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15140577	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	14890479	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15200612	shares
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.21
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false

Files In Submission

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report.css	Edgar Link	pending
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$OPBK
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2024 Q4 Form 10-Q Financial Statement

#000162828024047832 Filed on November 14, 2024

Income Statement

Balance Sheet

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Facts In Submission

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$OPBK OP Bancorp Stock $opbk

2024 Q4 Form 10-Q Financial Statement

#000162828024047832 Filed on November 14, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OPBK
OP Bancorp Stock $opbk