$OCFC
OCEANFIRST FINANCIAL CORP Stock $ocfc

$ocfc Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000100470221000026 Filed on March 01, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019 Q3
Revenue	$92.56M	$77.08M	$76.89M
YoY Change	20.09%	6.52%	7.71%
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	$3.800M	$3.000M	$3.000M
YoY Change	26.67%	-3.23%	0.0%
% of Gross Profit
Operating Expenses			$43.36M
YoY Change			9.67%
Operating Profit
YoY Change
Interest Expense	$14.71M	$13.72M	$13.50M
YoY Change	7.22%	30.46%	36.62%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$43.48M	$26.63M	$31.27M
YoY Change	63.28%	-14.1%	6.56%
Income Tax	$10.42M	$3.181M	$6.302M
% Of Pretax Income	23.96%	11.94%	20.15%
Net Earnings	$33.06M	$23.45M	$24.97M
YoY Change	41.0%	-12.28%	3.74%
Net Earnings / Revenue	35.72%	30.42%	32.48%
Basic Earnings Per Share	$0.53	$0.47	$0.50
Diluted Earnings Per Share	$0.54	$0.47	$0.49
COMMON SHARES
Basic Shares Outstanding	60.38M shares	50.36M shares	50.49M shares
Diluted Shares Outstanding			50.97M shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.319B	$133.2M	$155.7M
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	$130.0M	$102.7M	$103.7M
YoY Change	26.59%	-7.66%	-7.66%
Goodwill	$500.3M	$374.6M	$374.5M
YoY Change	33.55%	10.69%	10.78%
Intangibles	$23.67M	$15.61M	$16.61M
YoY Change	51.65%	-8.04%	-7.51%
Long-Term Investments
YoY Change
Other Assets	$6.000M	$54.00M	$71.00M
YoY Change	-88.89%	-20.59%	5.97%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$11.45B	$8.246B	$8.135B
YoY Change	38.83%	9.71%	7.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$23.00M	$19.00M	$20.00M
YoY Change	21.05%
Deferred Revenue
YoY Change
Short-Term Debt	$128.0M	$72.00M	$65.00M
YoY Change	77.78%	16.13%	6.56%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$23.00M	$19.00M	$20.00M
YoY Change	21.05%	-69.35%	-67.21%
LONG-TERM LIABILITIES
Long-Term Debt	$235.0M	$97.00M	$97.00M
YoY Change	142.27%	-3.0%	-2.02%
Other Long-Term Liabilities	$150.0M	$58.00M	$76.00M
YoY Change	158.62%	11.54%	24.59%
Total Long-Term Liabilities	$385.0M	$155.0M	$173.0M
YoY Change	148.39%	1.97%	8.13%
TOTAL LIABILITIES
Total Short-Term Liabilities	$23.00M	$19.00M	$20.00M
Total Long-Term Liabilities	$385.0M	$155.0M	$173.0M
Total Liabilities	$9.964B	$7.093B	$6.991B
YoY Change	40.48%	9.51%	7.01%
SHAREHOLDERS EQUITY
Retained Earnings	$378.3M	$358.7M	$343.6M
YoY Change	5.46%	17.57%	19.96%
Common Stock	$1.138B	$841.2M	$840.1M
YoY Change	35.32%	10.91%	10.91%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$25.65M	$36.90M	$28.89M
YoY Change	-30.49%	240.53%
Treasury Stock Shares	648.9K shares	1.587M shares	1.246M shares
Shareholders Equity	$1.484B	$1.153B	$1.145B
YoY Change
Total Liabilities & Shareholders Equity	$11.45B	$8.246B	$8.135B
YoY Change	38.83%	9.71%	7.57%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$33.06M	$23.45M	$24.97M
YoY Change	41.0%	-12.28%	3.74%
Depreciation, Depletion And Amortization	$3.800M	$3.000M	$3.000M
YoY Change	26.67%	-3.23%	0.0%
Cash From Operating Activities	$5.200M	$18.20M	$22.50M
YoY Change	-71.43%	-40.13%	-19.64%
INVESTING ACTIVITIES
Capital Expenditures	-$5.700M	-$1.900M	-$1.500M
YoY Change	200.0%	72.73%	-61.54%
Acquisitions
YoY Change
Other Investing Activities	$520.1M	-$141.9M	-$97.20M
YoY Change	-466.53%	-1323.28%	-253.31%
Cash From Investing Activities	$514.3M	-$143.8M	-$98.80M
YoY Change	-457.65%	-1456.6%	-265.77%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-239.2M	103.1M	77.10M
YoY Change	-332.01%	-252.29%	-139.97%
NET CHANGE
Cash From Operating Activities	5.200M	18.20M	22.50M
Cash From Investing Activities	514.3M	-143.8M	-98.80M
Cash From Financing Activities	-239.2M	103.1M	77.10M
Net Change In Cash	280.3M	-22.50M	800.0K
YoY Change	-1345.78%	-15.73%	-100.76%
FREE CASH FLOW
Cash From Operating Activities	$5.200M	$18.20M	$22.50M
Capital Expenditures	-$5.700M	-$1.900M	-$1.500M
Free Cash Flow	$10.90M	$20.10M	$24.00M
YoY Change	-45.77%	-36.19%	-24.76%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001004702
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CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2019Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
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CY2020Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherBorrowings
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-11713
CY2020	dei	Entity Registrant Name EntityRegistrantName	OceanFirst Financial Corp.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	22-3412577
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	110 West Front Street
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Red Bank
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	NJ
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	07701
CY2020	dei	City Area Code CityAreaCode	732
CY2020	dei	Local Phone Number LocalPhoneNumber	240-4500
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CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	114155000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	89912000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83135000	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	20782000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	17159000	USD
CY2018	us-gaap	Occupancy Net OccupancyNet	17915000	USD
CY2020	us-gaap	Equipment Expense EquipmentExpense	7769000	USD
CY2019	us-gaap	Equipment Expense EquipmentExpense	7719000	USD
CY2018	us-gaap	Equipment Expense EquipmentExpense	8319000	USD
CY2020	us-gaap	Marketing Expense MarketingExpense	3117000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	3469000	USD
CY2018	us-gaap	Marketing Expense MarketingExpense	3415000	USD
CY2020	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4871000	USD
CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2227000	USD
CY2018	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3713000	USD
CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	17467000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	14814000	USD
CY2018	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	13286000	USD
CY2020	ocfc	Check Card Processing CheckCardProcessing	5458000	USD
CY2019	ocfc	Check Card Processing CheckCardProcessing	5956000	USD
CY2018	ocfc	Check Card Processing CheckCardProcessing	4209000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	12247000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	9338000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	4963000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	16552000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	14968000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	13509000	USD
CY2020	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	6186000	USD
CY2019	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	4027000	USD
CY2018	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	3811000	USD
CY2020	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	14257000	USD
CY2018	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	0	USD
CY2020	ocfc	Branch Consolidation Expense BranchConsolidationExpense	7623000	USD
CY2019	ocfc	Branch Consolidation Expense BranchConsolidationExpense	9050000	USD
CY2018	ocfc	Branch Consolidation Expense BranchConsolidationExpense	3151000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	15947000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10503000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	26911000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	246431000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	189142000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	186337000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	81042000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	107358000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	85502000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17733000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18784000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13570000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63309000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2020	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2097000	USD
CY2019	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2018	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	61212000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	88574000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	71932000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.77
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.75
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.51
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	59919000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50166000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46773000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	60072000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50746000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47657000	shares
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63309000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	411000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	470000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-33000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1039000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1655000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-162000	USD
CY2020	ocfc	Other Comprehensive Income Accretion Of Fair Value Adjustment On Held To Maturity Securities Tax OtherComprehensiveIncomeAccretionOfFairValueAdjustmentOnHeldToMaturitySecuritiesTax	310000	USD
CY2019	ocfc	Other Comprehensive Income Accretion Of Fair Value Adjustment On Held To Maturity Securities Tax OtherComprehensiveIncomeAccretionOfFairValueAdjustmentOnHeldToMaturitySecuritiesTax	404000	USD
CY2018	ocfc	Other Comprehensive Income Accretion Of Fair Value Adjustment On Held To Maturity Securities Tax OtherComprehensiveIncomeAccretionOfFairValueAdjustmentOnHeldToMaturitySecuritiesTax	1186000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	446000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	587000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	1719000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	101000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	53000	USD
CY2020	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-344000	USD
CY2019	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2242000	USD
CY2018	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-195000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1829000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1752000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	65138000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	90816000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73684000	USD
CY2020	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2097000	USD
CY2019	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2018	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2020	ocfc	Comprehensive Income Loss Available For Common Stockholders ComprehensiveIncomeLossAvailableForCommonStockholders	63041000	USD
CY2019	ocfc	Comprehensive Income Loss Available For Common Stockholders ComprehensiveIncomeLossAvailableForCommonStockholders	90816000	USD
CY2018	ocfc	Comprehensive Income Loss Available For Common Stockholders ComprehensiveIncomeLossAvailableForCommonStockholders	73684000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	601941000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1752000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3038000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	8400000	USD
CY2018	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	1618000	USD
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29564000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5324000	USD
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	459251	shares
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	10837000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1039358000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2242000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3861000	USD
CY2019	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	1575000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	34241000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1335000	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	76481000	USD
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1127557	shares
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	26066000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1153119000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63309000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1829000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4258000	USD
CY2020	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	1135000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	40820000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1241000	USD
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	648851	shares
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	14814000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	55529000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2097000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1484130000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63309000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8453000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8363000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8706000	USD
CY2020	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	1135000	USD
CY2019	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	1575000	USD
CY2018	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	1618000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	4258000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	3861000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3038000	USD
CY2020	ocfc	Tax Expense Benefit From Shared Based Compensation TaxExpenseBenefitFromSharedBasedCompensation	-123000	USD
CY2019	ocfc	Tax Expense Benefit From Shared Based Compensation TaxExpenseBenefitFromSharedBasedCompensation	357000	USD
CY2018	ocfc	Tax Expense Benefit From Shared Based Compensation TaxExpenseBenefitFromSharedBasedCompensation	722000	USD
CY2020	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	6186000	USD
CY2019	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	4027000	USD
CY2018	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	3811000	USD
CY2020	us-gaap	Business Acquisitions Purchase Price Allocation Year Of Acquisition Net Effect On Income BusinessAcquisitionsPurchasePriceAllocationYearOfAcquisitionNetEffectOnIncome	21557000	USD
CY2019	us-gaap	Business Acquisitions Purchase Price Allocation Year Of Acquisition Net Effect On Income BusinessAcquisitionsPurchasePriceAllocationYearOfAcquisitionNetEffectOnIncome	14094000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	171263000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	1023000	USD
CY2018	us-gaap	Business Acquisitions Purchase Price Allocation Year Of Acquisition Net Effect On Income BusinessAcquisitionsPurchasePriceAllocationYearOfAcquisitionNetEffectOnIncome	16733000	USD
CY2020	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	93000	USD
CY2019	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	42000	USD
CY2018	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	98000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2997000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3232000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3893000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	553000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	216000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	262000	USD
CY2020	ocfc	Net Accretion Amortizationof Deferred Feesand Discountson Loans NetAccretionAmortizationofDeferredFeesandDiscountsonLoans	-4872000	USD
CY2019	ocfc	Net Accretion Amortizationof Deferred Feesand Discountson Loans NetAccretionAmortizationofDeferredFeesandDiscountsonLoans	-1584000	USD
CY2018	ocfc	Net Accretion Amortizationof Deferred Feesand Discountson Loans NetAccretionAmortizationofDeferredFeesandDiscountsonLoans	-669000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	59404000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1636000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	3490000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4615000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16053000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4568000	USD
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	390000	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-20000	USD
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-2359000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	3853000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	7532000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	4024000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	6000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	27000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	26000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	21214000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	267000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-199000	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	8278000	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	16000	USD
CY2018	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	668000	USD
CY2018	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	2794000	USD
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	213428000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	1007000	USD
CY2018	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	2498000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	6424000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5420000	USD
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5105000	USD
CY2020	ocfc	Gain Losson Saleof Assets Heldfor Sale GainLossonSaleofAssetsHeldforSale	21000	USD
CY2019	ocfc	Gain Losson Saleof Assets Heldfor Sale GainLossonSaleofAssetsHeldforSale	-17000	USD
CY2018	ocfc	Gain Losson Saleof Assets Heldfor Sale GainLossonSaleofAssetsHeldforSale	1245000	USD
CY2020	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	9434000	USD
CY2019	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	397000	USD
CY2018	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	-186000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-17030000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	32871000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-27301000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	74494000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	29299000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	16948000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-10264000	USD
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	69347000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	11673000	USD
CY2018	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	20619000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	132656000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	100247000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	92551000	USD
CY2020	ocfc	Net Increase Decrease In Loan Receivable NetIncreaseDecreaseInLoanReceivable	-428444000	USD
CY2019	ocfc	Net Increase Decrease In Loan Receivable NetIncreaseDecreaseInLoanReceivable	-215881000	USD
CY2018	ocfc	Net Increase Decrease In Loan Receivable NetIncreaseDecreaseInLoanReceivable	103889000	USD
CY2020	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	0	USD
CY2019	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	101674000	USD
CY2018	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	199580000	USD
CY2020	ocfc	Proceeds From Sale Of High Risk Loans ProceedsFromSaleOfHighRiskLoans	449462000	USD
CY2019	ocfc	Proceeds From Sale Of High Risk Loans ProceedsFromSaleOfHighRiskLoans	5901000	USD
CY2018	ocfc	Proceeds From Sale Of High Risk Loans ProceedsFromSaleOfHighRiskLoans	10412000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	77519000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	60158000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	33040000	USD
CY2020	ocfc	Payments To Acquire Other Held To Maturity Securities PaymentsToAcquireOtherHeldToMaturitySecurities	28796000	USD
CY2019	ocfc	Payments To Acquire Other Held To Maturity Securities PaymentsToAcquireOtherHeldToMaturitySecurities	4381000	USD
CY2018	ocfc	Payments To Acquire Other Held To Maturity Securities PaymentsToAcquireOtherHeldToMaturitySecurities	6486000	USD
CY2020	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	195277000	USD
CY2019	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	0	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	96519000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	214000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	191000	USD
CY2020	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	16978000	USD
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2018	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	43503000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	2353000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	10050000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	18501000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	53959000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	43256000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	52543000	USD
CY2020	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	12450000	USD
CY2019	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	0	USD
CY2018	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	0	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	10598000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2020	ocfc	Proceedsfrom Maturities Repaymentsand Callsof Debt Securities Fvni Availableforsale ProceedsfromMaturitiesRepaymentsandCallsofDebtSecuritiesFVNIAvailableforsale	306000	USD
CY2019	ocfc	Proceedsfrom Maturities Repaymentsand Callsof Debt Securities Fvni Availableforsale ProceedsfromMaturitiesRepaymentsandCallsofDebtSecuritiesFVNIAvailableforsale	503000	USD
CY2018	ocfc	Proceedsfrom Maturities Repaymentsand Callsof Debt Securities Fvni Availableforsale ProceedsfromMaturitiesRepaymentsandCallsofDebtSecuritiesFVNIAvailableforsale	655000	USD
CY2020	ocfc	Principal Repayments On Debt Investment Securities Held To Maturity PrincipalRepaymentsOnDebtInvestmentSecuritiesHeldToMaturity	857000	USD
CY2019	ocfc	Principal Repayments On Debt Investment Securities Held To Maturity PrincipalRepaymentsOnDebtInvestmentSecuritiesHeldToMaturity	0	USD
CY2018	ocfc	Principal Repayments On Debt Investment Securities Held To Maturity PrincipalRepaymentsOnDebtInvestmentSecuritiesHeldToMaturity	0	USD
CY2020	ocfc	Principal Repayments On Debt Mortgage Backed Securities Held To Maturity PrincipalRepaymentsOnDebtMortgageBackedSecuritiesHeldToMaturity	185830000	USD
CY2019	ocfc	Principal Repayments On Debt Mortgage Backed Securities Held To Maturity PrincipalRepaymentsOnDebtMortgageBackedSecuritiesHeldToMaturity	123833000	USD
CY2018	ocfc	Principal Repayments On Debt Mortgage Backed Securities Held To Maturity PrincipalRepaymentsOnDebtMortgageBackedSecuritiesHeldToMaturity	119125000	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1022000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	870000	USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2708000	USD
CY2020	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	78190000	USD
CY2019	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	122535000	USD
CY2018	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	106807000	USD
CY2020	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	59525000	USD
CY2019	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	127794000	USD
CY2018	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	127048000	USD
CY2020	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	855000	USD
CY2019	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	2060000	USD
CY2018	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	5438000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	1169000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	14728000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5075000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11487000	USD
CY2020	us-gaap	Payment For Contingent Consideration Liability Investing Activities PaymentForContingentConsiderationLiabilityInvestingActivities	0	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Investing Activities PaymentForContingentConsiderationLiabilityInvestingActivities	46950000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-23460000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-59395000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	3743000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-22169000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-172122000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	48553000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1507943000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	65687000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-143025000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-226018000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	105979000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	126092000	USD
CY2020	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	525000000	USD
CY2019	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	80000000	USD
CY2018	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	0	USD
CY2020	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	840200000	USD
CY2019	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	106618000	USD
CY2018	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	67155000	USD
CY2020	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	122180000	USD
CY2019	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2020	ocfc	Proceeds From Federal Reserve Bank Term Advances ProceedsFromFederalReserveBankTermAdvances	53778000	USD
CY2019	ocfc	Proceeds From Federal Reserve Bank Term Advances ProceedsFromFederalReserveBankTermAdvances	0	USD
CY2018	ocfc	Proceeds From Federal Reserve Bank Term Advances ProceedsFromFederalReserveBankTermAdvances	0	USD
CY2020	ocfc	Repayments From Federal Reserve Bank Term Advances RepaymentsFromFederalReserveBankTermAdvances	53778000	USD
CY2019	ocfc	Repayments From Federal Reserve Bank Term Advances RepaymentsFromFederalReserveBankTermAdvances	0	USD
CY2018	ocfc	Repayments From Federal Reserve Bank Term Advances RepaymentsFromFederalReserveBankTermAdvances	0	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	8109000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	263000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	439000	USD
CY2020	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	-2803000	USD
CY2019	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	-182000	USD
CY2018	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	2910000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1241000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1335000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5324000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2084000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2858000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3295000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	14814000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	26066000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10837000	USD
CY2020	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	55529000	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2020	ocfc	Acquisitionof Common Stockby Esop AcquisitionofCommonStockbyESOP	0	USD
CY2019	ocfc	Acquisitionof Common Stockby Esop AcquisitionofCommonStockbyESOP	0	USD
CY2018	ocfc	Acquisitionof Common Stockby Esop AcquisitionofCommonStockbyESOP	8400000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	42917000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	34241000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29564000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1074948000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	82773000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-128389000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1185435000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10898000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	12715000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	133226000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122328000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109613000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1318661000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	133226000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122328000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	120544000	USD
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	120792000	USD
CY2017Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	109613000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	12682000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	1536000	USD
CY2017Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	133226000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122328000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109613000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	1272134000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	120544000	USD
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	120792000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	46527000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	12682000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	1536000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1318661000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	133226000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122328000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	66454000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	52315000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	36447000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	5742000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	20006000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	2317000	USD
CY2020	ocfc	Accretion Of Unrealized Loss On Securities Reclassified To Held To Maturity AccretionOfUnrealizedLossOnSecuritiesReclassifiedToHeldToMaturity	756000	USD
CY2019	ocfc	Accretion Of Unrealized Loss On Securities Reclassified To Held To Maturity AccretionOfUnrealizedLossOnSecuritiesReclassifiedToHeldToMaturity	991000	USD
CY2018	ocfc	Accretion Of Unrealized Loss On Securities Reclassified To Held To Maturity AccretionOfUnrealizedLossOnSecuritiesReclassifiedToHeldToMaturity	2905000	USD
CY2020	ocfc	Net Loans Charged Off NetLoansChargedOff	18859000	USD
CY2019	ocfc	Net Loans Charged Off NetLoansChargedOff	1361000	USD
CY2018	ocfc	Net Loans Charged Off NetLoansChargedOff	2634000	USD
CY2020	ocfc	Transfer Of Premisesand Equipmentto Assets Heldfor Sale TransferOfPremisesandEquipmenttoAssetsHeldforSale	3953000	USD
CY2019	ocfc	Transfer Of Premisesand Equipmentto Assets Heldfor Sale TransferOfPremisesandEquipmenttoAssetsHeldforSale	2189000	USD
CY2018	ocfc	Transfer Of Premisesand Equipmentto Assets Heldfor Sale TransferOfPremisesandEquipmenttoAssetsHeldforSale	11092000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	106000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	963000	USD
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	992000	USD
CY2020	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	444543000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2018	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2020	ocfc	Unsettled Trades Of Debt Investment Securities Available For Sale UnsettledTradesOfDebtInvestmentSecuritiesAvailableForSale	-1404000	USD
CY2019	ocfc	Unsettled Trades Of Debt Investment Securities Available For Sale UnsettledTradesOfDebtInvestmentSecuritiesAvailableForSale	0	USD
CY2018	ocfc	Unsettled Trades Of Debt Investment Securities Available For Sale UnsettledTradesOfDebtInvestmentSecuritiesAvailableForSale	0	USD
CY2020	ocfc	Unsettled Trades Of Debt Investment Securities Held To Maturity UnsettledTradesOfDebtInvestmentSecuritiesHeldToMaturity	-3000000	USD
CY2019	ocfc	Unsettled Trades Of Debt Investment Securities Held To Maturity UnsettledTradesOfDebtInvestmentSecuritiesHeldToMaturity	0	USD
CY2018	ocfc	Unsettled Trades Of Debt Investment Securities Held To Maturity UnsettledTradesOfDebtInvestmentSecuritiesHeldToMaturity	0	USD
CY2020	ocfc	Unsettled Trades Of Equity Securities UnsettledTradesOfEquitySecurities	8142000	USD
CY2019	ocfc	Unsettled Trades Of Equity Securities UnsettledTradesOfEquitySecurities	0	USD
CY2018	ocfc	Unsettled Trades Of Equity Securities UnsettledTradesOfEquitySecurities	0	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	208880000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	103775000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	254522000	USD
CY2020	ocfc	Noncash Or Part Noncash Acquisition Advances To Federal Home Loan Bank NoncashOrPartNoncashAcquisitionAdvancesToFederalHomeLoanBank	5334000	USD
CY2019	ocfc	Noncash Or Part Noncash Acquisition Advances To Federal Home Loan Bank NoncashOrPartNoncashAcquisitionAdvancesToFederalHomeLoanBank	313000	USD
CY2018	ocfc	Noncash Or Part Noncash Acquisition Advances To Federal Home Loan Bank NoncashOrPartNoncashAcquisitionAdvancesToFederalHomeLoanBank	16967000	USD
CY2020	ocfc	Non Cash Or Part Non Cash Acquisition Loans NonCashOrPartNonCashAcquisitionLoans	1558480000	USD
CY2019	ocfc	Non Cash Or Part Non Cash Acquisition Loans NonCashOrPartNonCashAcquisitionLoans	307778000	USD
CY2018	ocfc	Non Cash Or Part Non Cash Acquisition Loans NonCashOrPartNonCashAcquisitionLoans	1517345000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	9744000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	3389000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	19892000	USD
CY2020	ocfc	Noncash Or Part Noncash Acquisition Accrued Interest Receivable NoncashOrPartNoncashAcquisitionAccruedInterestReceivable	4161000	USD
CY2019	ocfc	Noncash Or Part Noncash Acquisition Accrued Interest Receivable NoncashOrPartNoncashAcquisitionAccruedInterestReceivable	1390000	USD
CY2018	ocfc	Noncash Or Part Noncash Acquisition Accrued Interest Receivable NoncashOrPartNoncashAcquisitionAccruedInterestReceivable	5621000	USD
CY2020	ocfc	Noncash Or Part Noncash Acquisition Bank Owned Life Insurance NoncashOrPartNoncashAcquisitionBankOwnedLifeInsurance	22440000	USD
CY2019	ocfc	Noncash Or Part Noncash Acquisition Bank Owned Life Insurance NoncashOrPartNoncashAcquisitionBankOwnedLifeInsurance	10460000	USD
CY2018	ocfc	Noncash Or Part Noncash Acquisition Bank Owned Life Insurance NoncashOrPartNoncashAcquisitionBankOwnedLifeInsurance	85238000	USD
CY2020	ocfc	Noncash Or Part Noncash Acquisition Deferred Tax Asset NoncashOrPartNoncashAcquisitionDeferredTaxAsset	41000	USD
CY2019	ocfc	Noncash Or Part Noncash Acquisition Deferred Tax Asset NoncashOrPartNoncashAcquisitionDeferredTaxAsset	3967000	USD
CY2018	ocfc	Noncash Or Part Noncash Acquisition Deferred Tax Asset NoncashOrPartNoncashAcquisitionDeferredTaxAsset	57574000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	10073000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	1278000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	6343000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	139501000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	38875000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	199838000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	1958654000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	471225000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	2163340000	USD
CY2020	ocfc	Noncash Or Part Noncash Acquisition Deposits Assumed NoncashOrPartNoncashAcquisitionDepositsAssumed	1594403000	USD
CY2019	ocfc	Noncash Or Part Noncash Acquisition Deposits Assumed NoncashOrPartNoncashAcquisitionDepositsAssumed	449018000	USD
CY2018	ocfc	Noncash Or Part Noncash Acquisition Deposits Assumed NoncashOrPartNoncashAcquisitionDepositsAssumed	1616073000	USD
CY2020	ocfc	Noncash Or Part Noncash Acquisition Federal Home Loan Bank Advances NoncashOrPartNoncashAcquisitionFederalHomeLoanBankAdvances	92618000	USD
CY2019	ocfc	Noncash Or Part Noncash Acquisition Federal Home Loan Bank Advances NoncashOrPartNoncashAcquisitionFederalHomeLoanBankAdvances	0	USD
CY2018	ocfc	Noncash Or Part Noncash Acquisition Federal Home Loan Bank Advances NoncashOrPartNoncashAcquisitionFederalHomeLoanBankAdvances	127727000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	33648000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	5121000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	13242000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	1720669000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	454139000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	1757042000	USD
CY2020	ocfc	Maturity Period Of Short Term Interest Bearing Securities Included In Cash And Cash Equivalents MaturityPeriodOfShortTermInterestBearingSecuritiesIncludedInCashAndCashEquivalents	three months
CY2013	ocfc	Securities Transferred From Available For Sale To Held To Maturity SecuritiesTransferredFromAvailableForSaleToHeldToMaturity	536000000.0	USD
CY2013	ocfc	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred From Available For Sale Securities Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredFromAvailableForSaleSecuritiesBeforeTax	-13300000	USD
CY2020	ocfc	Minimum Period Of Loans Past Due MinimumPeriodOfLoansPastDue	90 days
CY2020	ocfc	Minimum Amount Of Nonaccrual Business And Commercial Real Estate Loans Evaluated Individually For Impairment MinimumAmountOfNonaccrualBusinessAndCommercialRealEstateLoansEvaluatedIndividuallyForImpairment	250000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Allowance for Credit Losses (“ACL”)</span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Under the Current Expected Credit Loss (“CECL”) model, the allowance for credit losses on financial assets is a valuation allowance estimated at each balance sheet date in accordance with GAAP that is deducted from the financial assets’ amortized cost basis to present the net amount expected to be collected on the financial assets. The CECL model also applies to certain off-balance sheet credit exposures.</span></div><div style="text-align:justify"><span><br/></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%">The Company estimates the ACL on loans based on the underlying assets’ amortized cost basis, which is the amount at which the financing receivable is originated or acquired, adjusted for applicable accretion or amortization of premium, discount, net deferred fees or costs, collection of cash, and charge-offs. In the event that collection of principal becomes uncertain, the Company has policies in place to write-off accrued interest receivable by reversing interest income in a timely manner. Therefore, the Company has made a policy election to exclude accrued interest from the amortized cost basis and therefore excludes it from the measurement of the ACL. For loans under forbearance as a result of Coronavirus Disease 2019 (“COVID-19”), the Company made a policy election to include the accrued interest receivable related to such loans in the amortized cost basis and therefore includes it in the measurement of the ACL. Accrued interest receivable at December 31, 2020 was $35.3 million, of which $8.0 million related to forbearance loans.</span></div><div style="text-align:justify"><span><br/></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%">Expected credit losses are reflected in the ACL through a charge to credit loss expense. The Company’s estimate of the ACL reflects credit losses currently expected over the remaining contractual life of the assets. When the Company deems all or a portion of a financial asset to be uncollectible the appropriate amount is written off and the ACL is reduced by the same amount. The Company applies judgment to determine when a financial asset is deemed uncollectible. When available information confirms that specific financial assets, or portions thereof, are uncollectible, these amounts are charged-off against the ACL. Subsequent recoveries, if any, are credited to the ACL when received.</span></div><div style="text-align:justify"><span><br/></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%">The Company measures the ACL of financial assets on a collective portfolio segment basis when the financial assets share similar risk characteristics. The Company has identified the following portfolio segments of financial assets with similar risk characteristics for measuring expected credit losses: commercial and industrial, commercial real estate - owner occupied, commercial real estate - investor (including commercial real estate - construction and land), residential real estate, consumer (including student loans) and HTM debt securities. The Company further segments the commercial loan portfolios by risk rating, and the residential and consumer loan portfolios by delinquency. The HTM portfolio is segmented by rating category. </span></div><div style="text-align:justify"><span><br/></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%">The Company’s methodology to measure the ACL incorporates both quantitative and qualitative information to assess lifetime expected credit losses at the portfolio segment level. The quantitative component includes the calculation of loss rates using an open pool method. Under this method, the Company calculates a loss rate based on historical loan level loss experience for portfolio segments with similar risk characteristics. The historical loss rate is adjusted for select macroeconomic variables that consider both historical trends as well as forecasted trends for a single economic scenario. The adjusted loss rate is calculated for an eight quarter forecast period then reverts to the historical loss rate on a straight-line basis over four quarters. The Company differentiates its loss-rate method for HTM debt securities by looking to publicly available historical default and recovery statistics based on the attributes of issuer type, rating category and time to maturity. The Company measures expected credit losses of these financial assets by applying loss rates to the amortized cost basis of each asset taking into consideration amortization, prepayment and default assumptions. </span></div><div style="text-align:justify"><span><br/></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%">The Company considers qualitative adjustments to expected credit loss estimates for information not already captured in the loss estimation process. Qualitative factor adjustments may increase or decrease management’s estimate of expected credit losses. Adjustments will not be made for information that has already been considered and included in the quantitative allowance. Qualitative loss factors are based on management's judgment of company, market, industry or business specific data, changes in loan composition, performance trends, regulatory changes, uncertainty of macroeconomic forecasts, and other asset specific risk characteristics.</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Collateral Dependent Financial Assets</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%">For collateral dependent financial assets where the Company has determined that foreclosure of the collateral is probable and where the borrower is experiencing financial difficulty, the ACL is measured based on the difference between the fair value of the collateral and the amortized cost basis of the asset as of the measurement date. Fair value is generally calculated based on the value of the underlying collateral less an appraisal discount and the estimated cost to sell. Due to conditions caused by COVID-19, appraisals ordered in the current environment may not be indicative of the underlying loan collateral value. As such, the Company may require multiple valuation approaches (sales comparison approach, income approach, cost approach), as applicable. The Company will assess the individual facts and circumstances of COVID-19-related loan downgrades and, if a new appraisal is not necessary, an additional discount may be applied to an existing appraisal. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Troubled Debt Restructured (“TDR”) Loans</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%">A loan that has been modified or renewed is considered a TDR when two conditions are met: (1) the borrower is experiencing financial difficulty and (2) concessions are made for the borrower's benefit that would not otherwise be considered for a borrower or transaction with similar credit risk characteristics. So long as they share similar risk characteristics, TDRs may be collectively evaluated and included in the Company’s existing portfolio segments to measure the ACL, unless the TDR is collateral dependent. Loans modified in accordance with the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act are not considered TDRs.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Loan Commitments and Allowance for Credit Losses on Off-Balance Sheet Credit Exposures</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%">Financial assets include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for off-balance sheet loan commitments is represented by the contractual amount of those instruments. Such financial instruments are recorded when they are funded.</span></div><div style="text-align:justify"><span><br/></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%">The Company records an allowance for credit losses on off-balance sheet credit exposures through a charge to credit loss expense for off-balance sheet credit exposures. The ACL on off-balance sheet credit exposures is estimated by portfolio segment at each balance sheet date under the CECL model using the same methodologies as portfolio loans, taking into consideration management’s assumption of the likelihood that funding will occur, and is included in other liabilities on the Company’s consolidated balance sheets.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Acquired Loans</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%">Acquired loans are recorded at fair value at the date of acquisition based on a discounted cash flow methodology that considers various factors including the type of loan and related collateral, classification status, fixed or variable interest rate, term of loan and whether or not the loan was amortizing, and a discount rate reflecting the Company’s assessment of risk inherent in the cash flow estimates. Certain acquired loans are grouped together according to similar risk characteristics and are aggregated when applying various valuation techniques. These cash flow evaluations are subjective as they require material estimates, all of which may be susceptible to significant change.</span></div><div style="text-align:justify"><span><br/></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%">Prior to January 1, 2020, loans acquired in a business combination that had evidence of deterioration of credit quality since origination and for which it was probable, at acquisition, that the Company would be unable to collect all contractually required payments receivable were considered purchased credit impaired (“PCI”). PCI loans were individually evaluated and recorded at fair value at the date of acquisition with no initial valuation allowance based on a discounted cash flow methodology that considered various factors including the type of loan and related collateral, classification status, fixed or variable interest rate, term of loan and whether or not the loan was amortizing, and a discount rate reflecting the Company’s assessment of risk inherent in the cash flow estimates. </span></div><div style="text-align:justify"><span><br/></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%">Beginning on January 1, 2020, loans acquired in a business combination that have experienced more-than-insignificant deterioration in credit quality since origination are considered purchased with credit deterioration (“PCD”) loans. The Company evaluated acquired loans for deterioration in credit quality based on any of, but not limited to, the following: (1) non-accrual status; (2) troubled debt restructured designation; (3) risk ratings of special mention, substandard or doubtful; (4) watchlist credits; and (5) delinquency status, including loans that were current on acquisition date, but had been previously delinquent. At the acquisition date, an estimate of expected credit losses was made for groups of PCD loans with similar risk characteristics and individual PCD loans without similar risk characteristics. This initial allowance for credit losses is allocated to individual PCD loans and added to the purchase price or acquisition date fair values to establish the initial amortized cost basis of the PCD loans. As the initial allowance for credit losses is added to the purchase price, there is no credit loss expense recognized upon acquisition of a PCD loan. Any difference between the unpaid principal balance of PCD loans and the amortized cost basis is considered to relate to noncredit factors and results in a discount or premium. Discounts and premiums are recognized through </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%">interest income on a level-yield method over the life of the loans. All loans considered to be PCI prior to January 1, 2020 were converted to PCD on that date.</span></div><div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">For acquired loans not deemed PCD at acquisition, the differences between the initial fair value and the unpaid principal balance are recognized as interest income on a level-yield basis over the lives of the related loans. At the acquisition date, an initial allowance for expected credit losses is estimated and recorded as credit loss expense.</span></div><div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The subsequent measurement of expected credit losses for all acquired loans is the same as the subsequent measurement of expected credit losses for originated loans.</span></div><div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Allowance for Loan Losses (Prior to January 1, 2020)</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%">The allowance for loan losses (currently referred to as ACL on loans) represented a valuation account that reflected probable incurred losses in the loan portfolio. The adequacy of the allowance for loan losses was based on management’s evaluation of the Bank’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, current economic and regulatory conditions, as well as organizational changes. The allowance for loan losses was maintained at an amount management considered sufficient to provide for probable losses.</span></div><div><span><br/></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:115%">Acquired loans that have not been renewed since acquisition, or that had a PCI mark, were excluded from the allowance for loan loss calculation. The Bank calculated a general valuation allowance for these excluded acquired loans without a PCI mark and compared that to the remaining general credit and interest rate marks. To the extent the remaining general credit and interest rate marks exceeded the calculated general valuation allowance, no additional reserve was required. If the calculated general valuation allowance exceeded the remaining general credit and interest rate marks, the Bank recorded an adjustment to the extent necessary.</span></div><div><span><br/></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:115%">The Bank’s allowance for loan losses included specific allowances and a general allowance, each updated on a quarterly basis. A specific allowance was determined for all impaired loans (excluding PCI loans). The Bank defined an impaired loan as all non-accrual commercial real estate, multi-family, land, construction and commercial loans (currently segmented as commercial real estate and commercial and industrial loans) in excess of $250,000 for which it was probable, based on current information, that the Company would not collect all amounts due under the contractual terms of the loan agreement. Impaired loans also included all loans modified as TDRs. For collateral dependent loans, the specific allowance represented the difference between the Bank’s recorded investment in the loan, net of any interim charge-offs, and the estimated fair value of the collateral, less estimated selling costs. Impairment for all other impaired loans was calculated based on a combination of the estimated fair value of non-real estate collateral, personal guarantees, or the present value of the expected future cash flows.</span></div><div><span><br/></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:115%">A general allowance was determined for all loans that were not individually evaluated for impairment (excluding acquired loans that have not been renewed under the Bank’s underwriting criteria). In determining the level of the general allowance, the Bank segmented the loan portfolio into portfolio segments. The portfolio segments were further segmented by delinquency status or risk rating. An estimated loss factor was then applied to the outstanding principal loan balance of the delinquency status or risk rating category for each portfolio segment. To determine the loss factor, the Bank utilized historical loss experience adjusted for certain qualitative factors and the loss emergence period.</span></div><div><span><br/></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:115%">The Bank’s historical loss experience was based on a rolling 36-month look-back period for each portfolio segment. The look-back period was selected based on (1) management’s judgment that this period captured sufficient loss events (in both dollar terms and number of individual events) to be relevant; and (2) that the Bank’s underwriting criteria and risk characteristics have remained relatively stable throughout this period. The historical loss experience was adjusted for certain qualitative factors including, but not limited to, (1) delinquency trends, (2) net charge-off trends, (3) nature and volume of the loan portfolio, (4) loan policies and underwriting standards, (5) experience and ability of lending personnel, (6) concentrations of credit, (7) loan review system, and external factors such as (8) changes in current economic conditions, (9) local competition and (10) regulation. Economic factors that the Bank considered in its estimate of the allowance for loan losses included: local and regional trends in economic growth, unemployment and real estate values. The Bank considered the applicability of each of these qualitative factors in estimating the general allowance for each portfolio segment. Each quarter, the Bank considered the current conditions for each of the qualitative factors, as well as a forward-looking view on trends and events, to support an assessment unique to each portfolio segment.</span></div><div><span><br/></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:115%">The Bank calculated and analyzed the loss emergence period on an annual basis or more frequently if conditions warranted. The Bank’s methodology was to use loss events in the past 12 quarters to determine the loss emergence period for each loan segment. The loss emergence period was specific to each portfolio segment and represented the amount of time that has elapsed between (1) the occurrence of a loss event, which resulted in a potential loss and (2) the confirmation of the potential loss, when the Bank recorded an initial charge-off or downgrades the risk-rating of the loan to substandard.</span></div>The Bank also maintained an unallocated portion of the allowance for loan losses. The primary purpose of the unallocated component was to account for the inherent factors that could not be practically assigned to individual loss categories, including the periodic update of appraisals, subjectivity of the Bank’s credit review and risk rating process, and economic conditions that may not have been fully captured in the Bank’s loss history or qualitative factors.
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	35300000	USD
CY2020Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	8000000.0	USD
CY2020	ocfc	Minimum Amount Of Nonaccrual Business And Commercial Real Estate Loans Evaluated Individually For Impairment MinimumAmountOfNonaccrualBusinessAndCommercialRealEstateLoansEvaluatedIndividuallyForImpairment	250000	USD
CY2019Q4	us-gaap	Certain Loans And Debt Securities Acquired In Transfer No Allowance Recorded And No Subsequent Impairment CertainLoansAndDebtSecuritiesAcquiredInTransferNoAllowanceRecordedAndNoSubsequentImpairment	13300000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Effect Of Change In Method FinancingReceivableAllowanceForCreditLossesEffectOfChangeInMethod	3200000	USD
CY2020Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.040
CY2020Q4	ocfc	Common Equity Tier One Capital To Risk Weighted Assets CommonEquityTierOneCapitalToRiskWeightedAssets	0.070
CY2020Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.085
CY2020Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.105
CY2020Q4	us-gaap	Banking Regulation Leverage Buffer Actual BankingRegulationLeverageBufferActual	0.0250
CY2020Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.050
CY2020Q4	ocfc	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.065
CY2020Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.080
CY2020Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.100
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2019Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2020	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.0250
CY2019Q1	us-gaap	Banking Regulation Leverage Buffer Actual BankingRegulationLeverageBufferActual	0.0250
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	15900000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10500000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	26900000	USD
CY2020	ocfc	Business Combination It Expenses BusinessCombinationITExpenses	3758000	USD
CY2019	ocfc	Business Combination It Expenses BusinessCombinationITExpenses	2514000	USD
CY2018	ocfc	Business Combination It Expenses BusinessCombinationITExpenses	6017000	USD
CY2020	ocfc	Business Combination Professional Fees BusinessCombinationProfessionalFees	3638000	USD
CY2019	ocfc	Business Combination Professional Fees BusinessCombinationProfessionalFees	4239000	USD
CY2018	ocfc	Business Combination Professional Fees BusinessCombinationProfessionalFees	4414000	USD
CY2020	ocfc	Business Combination Control Payments BusinessCombinationControlPayments	7727000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	93000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	150960000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	772975000	USD
CY2019	ocfc	Business Combination Control Payments BusinessCombinationControlPayments	2942000	USD
CY2018	ocfc	Business Combination Control Payments BusinessCombinationControlPayments	15660000	USD
CY2020	ocfc	Business Combination Miscellaneous Expenses BusinessCombinationMiscellaneousExpenses	824000	USD
CY2019	ocfc	Business Combination Miscellaneous Expenses BusinessCombinationMiscellaneousExpenses	808000	USD
CY2018	ocfc	Business Combination Miscellaneous Expenses BusinessCombinationMiscellaneousExpenses	820000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	15947000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10503000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	26911000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	180154000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3154000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	6000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	183302000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2020Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	942314000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	29378000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	3226000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	968466000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	1715000	USD
CY2020Q4	ocfc	Available For Sale Securities And Held To Maturity Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturityAmortizedCost	1122468000	USD
CY2020Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Gain AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedGain	32532000	USD
CY2020Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedLoss	3232000	USD
CY2020Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Estimated Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesEstimatedFairValue	1151768000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	1715000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	149640000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1413000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	8224000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	3909000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	777290000	USD
CY2019Q4	ocfc	Available For Sale Securities And Held To Maturity Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturityAmortizedCost	922615000	USD
CY2019Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Gain AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedGain	9637000	USD
CY2019Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedLoss	4002000	USD
CY2019Q4	us-gaap	Debt Securities DebtSecurities	928250000	USD
CY2013Q3	ocfc	Securities Transferred From Available For Sale To Held To Maturity SecuritiesTransferredFromAvailableForSaleToHeldToMaturity	536000000.0	USD
CY2013Q3	ocfc	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred From Available For Sale Securities Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredFromAvailableForSaleSecuritiesBeforeTax	-13300000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	942314000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	772975000	USD
CY2020	ocfc	Other Comprehensive Income Loss Transfers From Available For Sale Securities To Held To Maturity OtherComprehensiveIncomeLossTransfersFromAvailableForSaleSecuritiesToHeldToMaturity	-13347000	USD
CY2019	ocfc	Other Comprehensive Income Loss Transfers From Available For Sale Securities To Held To Maturity OtherComprehensiveIncomeLossTransfersFromAvailableForSaleSecuritiesToHeldToMaturity	-13347000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	1715000	USD
CY2019Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
CY2020	ocfc	Other Comprehensive Income Reclassification Of Accretion Of Net Unrealized Losses To Held To Maturity Securities OtherComprehensiveIncomeReclassificationOfAccretionOfNetUnrealizedLossesToHeldToMaturitySecurities	10001000	USD
CY2019	ocfc	Other Comprehensive Income Reclassification Of Accretion Of Net Unrealized Losses To Held To Maturity Securities OtherComprehensiveIncomeReclassificationOfAccretionOfNetUnrealizedLossesToHeldToMaturitySecurities	9245000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	937253000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	768873000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	476000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Amount Callable Amortized Cost AvailableForSaleAndHeldToMaturitySecuritiesAmountCallableAmortizedCost	53800000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Amount Callable Fair Value Disclosure AvailableForSaleAndHeldToMaturitySecuritiesAmountCallableFairValueDisclosure	52900000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	97822000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	98394000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	195949000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	201798000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	93596000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	92120000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	103307000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	111740000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	490674000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	504052000	USD
CY2020Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Other Debt Obligations At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForOtherDebtObligationsAtFairValue	435900000	USD
CY2019Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Other Debt Obligations At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForOtherDebtObligationsAtFairValue	475600000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	21795000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	6000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	21795000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	6000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	86523000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	546000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	46965000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	2680000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	133488000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	3226000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	108318000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAggregateLosses	552000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	46965000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAggregateLosses	2680000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	155283000	USD
CY2020Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLosses	3232000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	25021000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	54000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	22451000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	39000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	47472000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	93000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	67314000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	452000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	151085000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3457000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	218399000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	3909000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	92335000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAggregateLosses	506000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	173536000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAggregateLosses	3496000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	265871000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLosses	4002000	USD
CY2020Q4	ocfc	Equity Investments EquityInvestments	107100000	USD
CY2019Q4	ocfc	Equity Investments EquityInvestments	10100000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	5400000	USD
CY2019	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	USD
CY2020	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	21214000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	5401000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	15813000	USD
CY2020Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	7756106000	USD
CY2019Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	6214652000	USD
CY2020Q4	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	9486000	USD
CY2019Q4	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	9880000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	60735000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16852000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	7704857000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	6207680000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	1496628000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	1313707000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	817607000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	800731000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	620952000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	2340571000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	365910000	USD
CY2020Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	7756106000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16852000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	2639000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	57402000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	20184000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1325000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	60735000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16577000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1636000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2804000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1443000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16852000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	476000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	16376000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16852000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	26510000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	6174877000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	6201387000	USD
CY2019	ocfc	Minimum Amount Of Nonaccrual Business And Commercial Real Estate Loans Evaluated Individually For Impairment MinimumAmountOfNonaccrualBusinessAndCommercialRealEstateLoansEvaluatedIndividuallyForImpairment	250000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	26500000	USD
CY2019Q4	ocfc	Specific Reserves On Nonaccrual Troubled Debt Restructurings SpecificReservesOnNonaccrualTroubledDebtRestructurings	476000	USD
CY2019	ocfc	Average Balances Of Impaired Loans AverageBalancesOfImpairedLoans	29400000	USD
CY2019	ocfc	Interest Income On Non Accrual Loans That Would Have Been Recognized If All Of Such Loans Had Been Current In Accordance With Their Original Terms InterestIncomeOnNonAccrualLoansThatWouldHaveBeenRecognizedIfAllOfSuchLoansHadBeenCurrentInAccordanceWithTheirOriginalTerms	372000	USD
CY2018	ocfc	Interest Income On Non Accrual Loans That Would Have Been Recognized If All Of Such Loans Had Been Current In Accordance With Their Original Terms InterestIncomeOnNonAccrualLoansThatWouldHaveBeenRecognizedIfAllOfSuchLoansHadBeenCurrentInAccordanceWithTheirOriginalTerms	419000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	24600000	USD
CY2019Q4	ocfc	Financing Receivable Impaired Troubled Debt Restructuring Performing Loan Amount FinancingReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	18000000.0	USD
CY2020Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	46863000	USD
CY2019Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	17849000	USD
CY2019Q4	ocfc	Financing Receivable Commitments To Lend Additional Funds On Non Accrual Loans FinancingReceivableCommitmentsToLendAdditionalFundsOnNonAccrualLoans	0	USD
CY2020Q4	ocfc	Financing Receivable Commitments To Lend Additional Funds On Non Accrual Loans FinancingReceivableCommitmentsToLendAdditionalFundsOnNonAccrualLoans	0	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	27126000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	63780000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	7692326000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7756106000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	9286000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	26636000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	6174751000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	6201387000	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	17500000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	24600000	USD
CY2020	ocfc	Non Accrual Troubled Debt Restructurings NonAccrualTroubledDebtRestructurings	5500000	USD
CY2019	ocfc	Non Accrual Troubled Debt Restructurings NonAccrualTroubledDebtRestructurings	6600000	USD
CY2020Q4	ocfc	Specific Reserves On Nonaccrual Troubled Debt Restructurings SpecificReservesOnNonaccrualTroubledDebtRestructurings	0	USD
CY2019Q4	ocfc	Specific Reserves On Nonaccrual Troubled Debt Restructurings SpecificReservesOnNonaccrualTroubledDebtRestructurings	476000	USD
CY2020Q4	ocfc	Financing Receivable Impaired Troubled Debt Restructuring Performing Loan Amount FinancingReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	12000000.0	USD
CY2019Q4	ocfc	Financing Receivable Impaired Troubled Debt Restructuring Performing Loan Amount FinancingReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	18000000.0	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3630000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	691000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	2613000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	1317000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3025000	USD
CY2020Q4	ocfc	Interest And Dividends Receivable Loans InterestAndDividendsReceivableLoans	30893000	USD
CY2019Q4	ocfc	Interest And Dividends Receivable Loans InterestAndDividendsReceivableLoans	17664000	USD
CY2020Q4	ocfc	Interest And Dividends Receivable Investment Securities InterestAndDividendsReceivableInvestmentSecurities	3169000	USD
CY2019Q4	ocfc	Interest And Dividends Receivable Investment Securities InterestAndDividendsReceivableInvestmentSecurities	2827000	USD
CY2020Q4	ocfc	Interest And Dividends Receivable Mortgage Backed Securities InterestAndDividendsReceivableMortgageBackedSecurities	1207000	USD
CY2019Q4	ocfc	Interest And Dividends Receivable Mortgage Backed Securities InterestAndDividendsReceivableMortgageBackedSecurities	1183000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	35269000	USD
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	21674000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	1845000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	2572000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	174853000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	162267000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	67759000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	59576000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	107094000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	102691000	USD
CY2020	ocfc	Depreciation Depletionand Amortization Netof Purchase Accounting Accretionand Amortization DepreciationDepletionandAmortizationNetofPurchaseAccountingAccretionandAmortization	8500000	USD
CY2019	ocfc	Depreciation Depletionand Amortization Netof Purchase Accounting Accretionand Amortization DepreciationDepletionandAmortizationNetofPurchaseAccountingAccretionandAmortization	8200000	USD
CY2018	ocfc	Depreciation Depletionand Amortization Netof Purchase Accounting Accretionand Amortization DepreciationDepletionandAmortizationNetofPurchaseAccountingAccretionandAmortization	8700000	USD
CY2020Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	367000	USD
CY2019Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	238000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2133195000	USD
CY2020Q4	ocfc	Non Interest Bearing Deposit Liabilities Weighted Average Cost Percentage NonInterestBearingDepositLiabilitiesWeightedAverageCostPercentage	0
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1377396000	USD
CY2019Q4	ocfc	Non Interest Bearing Deposit Liabilities Weighted Average Cost Percentage NonInterestBearingDepositLiabilitiesWeightedAverageCostPercentage	0
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	3646866000	USD
CY2020Q4	us-gaap	Weighted Average Rate Domestic Deposit Checking WeightedAverageRateDomesticDepositChecking	0.0049
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	2539428000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Checking WeightedAverageRateDomesticDepositChecking	0.0068
CY2020Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	783521000	USD
CY2020Q4	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0019
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	578147000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0068
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1491251000	USD
CY2020Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0005
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	898174000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0013
CY2020Q4	us-gaap	Time Deposits TimeDeposits	1372783000	USD
CY2020Q4	us-gaap	Weighted Average Rate Domestic Deposit Time Deposits WeightedAverageRateDomesticDepositTimeDeposits	0.0151
CY2019Q4	us-gaap	Time Deposits TimeDeposits	935632000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Time Deposits WeightedAverageRateDomesticDepositTimeDeposits	0.0182
CY2020Q4	us-gaap	Deposits Deposits	9427616000	USD
CY2020Q4	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0043
CY2019Q4	us-gaap	Deposits Deposits	6328777000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0062
CY2020Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	409500000	USD
CY2019Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	150600000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	973426000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	265668000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	63132000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	46321000	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	15138000	USD
CY2020Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	9098000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	1372783000	USD
CY2020	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	19395000	USD
CY2019	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	16820000	USD
CY2018	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	9219000	USD
CY2020	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	2902000	USD
CY2019	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	4919000	USD
CY2018	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	2818000	USD
CY2020	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	2505000	USD
CY2019	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	1195000	USD
CY2018	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	990000	USD
CY2020	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	23488000	USD
CY2019	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	15498000	USD
CY2018	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	9551000	USD
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	48290000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	38432000	USD
CY2018	us-gaap	Interest Expense Deposits InterestExpenseDeposits	22578000	USD
CY2020Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	0	USD
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	519260000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	128454000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	71739000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	235471000	USD
CY2019Q4	us-gaap	Other Borrowings OtherBorrowings	96801000	USD
CY2020Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	363925000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	687800000	USD
CY2020	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	14300000	USD
CY2020	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	413290000	USD
CY2019	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	387925000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	825824000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	519260000	USD
CY2020	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0170
CY2019	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0218
CY2020Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	252100000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	235471000	USD
CY2020	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	7018000	USD
CY2019	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	8441000	USD
CY2018	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	7885000	USD
CY2020	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	562000	USD
CY2019	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	276000	USD
CY2018	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	168000	USD
CY2020	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	10787000	USD
CY2019	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	5674000	USD
CY2018	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	5521000	USD
CY2020	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	18367000	USD
CY2019	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	14391000	USD
CY2018	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	13574000	USD
CY2020	ocfc	Federal Home Loan Bank Stock Percentage Of Minimum Investment FederalHomeLoanBankStockPercentageOfMinimumInvestment	0.00125
CY2020	ocfc	Percentage Of Transactions Between Federal Home Loan Bank And Bank PercentageOfTransactionsBetweenFederalHomeLoanBankAndBank	0.045
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15731000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1991000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	18030000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6617000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	740000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	108000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22348000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2731000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	18138000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-2746000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	18846000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4568000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1869000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2793000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4615000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16053000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4568000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17733000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18784000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13570000	USD
CY2020	ocfc	Unrealized Gains Loss On Securities Tax Expense UnrealizedGainsLossOnSecuritiesTaxExpense	721000	USD
CY2019	ocfc	Unrealized Gains Loss On Securities Tax Expense UnrealizedGainsLossOnSecuritiesTaxExpense	874000	USD
CY2018	ocfc	Unrealized Gains Loss On Securities Tax Expense UnrealizedGainsLossOnSecuritiesTaxExpense	1100000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	81042000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	107358000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	85502000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17019000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22545000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17955000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3751000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	583000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	85000	USD
CY2020	ocfc	Income Tax Reconciliation Deductions Earnings On Life Insurance IncomeTaxReconciliationDeductionsEarningsOnLifeInsurance	1349000	USD
CY2019	ocfc	Income Tax Reconciliation Deductions Earnings On Life Insurance IncomeTaxReconciliationDeductionsEarningsOnLifeInsurance	1138000	USD
CY2018	ocfc	Income Tax Reconciliation Deductions Earnings On Life Insurance IncomeTaxReconciliationDeductionsEarningsOnLifeInsurance	1072000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1161000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	665000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	615000	USD
CY2020	ocfc	Income Tax Reconciliation Merger Related Expenses IncomeTaxReconciliationMergerRelatedExpenses	138000	USD
CY2019	ocfc	Income Tax Reconciliation Merger Related Expenses IncomeTaxReconciliationMergerRelatedExpenses	297000	USD
CY2018	ocfc	Income Tax Reconciliation Merger Related Expenses IncomeTaxReconciliationMergerRelatedExpenses	322000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-136000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-386000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-758000	USD
CY2020	ocfc	Effective Income Tax Rate Reconciliation Revaluationof State Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationRevaluationofStateDeferredTaxAssetAmount	0	USD
CY2019	ocfc	Effective Income Tax Rate Reconciliation Revaluationof State Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationRevaluationofStateDeferredTaxAssetAmount	-2205000	USD
CY2018	ocfc	Effective Income Tax Rate Reconciliation Revaluationof State Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationRevaluationofStateDeferredTaxAssetAmount	0	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-1854000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-204000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-221000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-586000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-325000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-26000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	93000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17733000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18784000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13570000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	16168000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	4107000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	2485000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	3061000	USD
CY2020Q4	ocfc	Deferred Incentive Compensation And Other Charges DeferredIncentiveCompensationAndOtherCharges	2919000	USD
CY2019Q4	ocfc	Deferred Incentive Compensation And Other Charges DeferredIncentiveCompensationAndOtherCharges	1397000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	533000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	591000	USD
CY2020Q4	ocfc	Deferred Tax Asset Stock Option Plan DeferredTaxAssetStockOptionPlan	2214000	USD
CY2019Q4	ocfc	Deferred Tax Asset Stock Option Plan DeferredTaxAssetStockOptionPlan	1270000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	2435000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1438000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	272000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	826000	USD
CY2020Q4	ocfc	Deferred Tax Assets Net Operating Loss Carry Forwards Related To Acquisition DeferredTaxAssetsNetOperatingLossCarryForwardsRelatedToAcquisition	33014000	USD
CY2019Q4	ocfc	Deferred Tax Assets Net Operating Loss Carry Forwards Related To Acquisition DeferredTaxAssetsNetOperatingLossCarryForwardsRelatedToAcquisition	39519000	USD
CY2020Q4	ocfc	Deferred Fees On Ppp Loans DeferredFeesOnPPPLoans	517000	USD
CY2019Q4	ocfc	Deferred Fees On Ppp Loans DeferredFeesOnPPPLoans	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	195000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	178000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	3705000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	4746000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	64457000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	57133000	USD
CY2020Q4	ocfc	Deferred Tax Liability Unrealized Gain On Equity Securities DeferredTaxLiabilityUnrealizedGainOnEquitySecurities	4154000	USD
CY2019Q4	ocfc	Deferred Tax Liability Unrealized Gain On Equity Securities DeferredTaxLiabilityUnrealizedGainOnEquitySecurities	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5871000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7340000	USD
CY2020Q4	ocfc	Deferred Tax Liabilities Deferred Loan Fees And Costs DeferredTaxLiabilitiesDeferredLoanFeesAndCosts	2968000	USD
CY2019Q4	ocfc	Deferred Tax Liabilities Deferred Loan Fees And Costs DeferredTaxLiabilitiesDeferredLoanFeesAndCosts	2379000	USD
CY2020Q4	ocfc	Deferred Tax Assets Fair Value Adjustments On Acquisitions DeferredTaxAssetsFairValueAdjustmentsOnAcquisitions	-602000	USD
CY2019Q4	ocfc	Deferred Tax Assets Fair Value Adjustments On Acquisitions DeferredTaxAssetsFairValueAdjustmentsOnAcquisitions	8475000	USD
CY2020Q4	ocfc	Deferred Tax Liabilities Accretion Of Discount On Investment Securities DeferredTaxLiabilitiesAccretionOfDiscountOnInvestmentSecurities	452000	USD
CY2019Q4	ocfc	Deferred Tax Liabilities Accretion Of Discount On Investment Securities DeferredTaxLiabilitiesAccretionOfDiscountOnInvestmentSecurities	380000	USD
CY2020Q4	ocfc	Deferred Tax Liabilities Tax Effects Of Undistributed Earnings DeferredTaxLiabilitiesTaxEffectsOfUndistributedEarnings	0	USD
CY2019Q4	ocfc	Deferred Tax Liabilities Tax Effects Of Undistributed Earnings DeferredTaxLiabilitiesTaxEffectsOfUndistributedEarnings	4735000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	783000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	707000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	14830000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7066000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	49627000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	50067000	USD
CY2020Q4	us-gaap	Statutory Accounting Practices Portion Of Excess Retained Earnings Not Taxed StatutoryAccountingPracticesPortionOfExcessRetainedEarningsNotTaxed	10800000	USD
CY2020Q4	ocfc	Unrecognized Deferred Tax Liability On Retained Earnings Not Provided For Provision For Income Tax UnrecognizedDeferredTaxLiabilityOnRetainedEarningsNotProvidedForProvisionForIncomeTax	2800000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019	ocfc	Income Tax Expense Benefitfrom Revaluationof State Deferred Tax Assets IncomeTaxExpenseBenefitfromRevaluationofStateDeferredTaxAssets	-2200000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	1900000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	3600000	USD
CY2020Q4	ocfc	Employee Stock Ownership Plan Esop Shares Contributed To Esop Value EmployeeStockOwnershipPlanESOPSharesContributedToESOPValue	1500000	USD
CY2019Q4	ocfc	Employee Stock Ownership Plan Esop Shares Contributed To Esop Value EmployeeStockOwnershipPlanESOPSharesContributedToESOPValue	1500000	USD
CY2020	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	313000	USD
CY2019	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	357000	USD
CY2020Q4	us-gaap	Employee Stock Ownership Plan Esop Debt Structure Direct Loan Amount EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount	8100000	USD
CY2019Q4	us-gaap	Employee Stock Ownership Plan Esop Debt Structure Direct Loan Amount EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount	9300000	USD
CY2020Q4	ocfc	Employee Stock Ownership Plan Esop Number Of Unallocated Shares EmployeeStockOwnershipPlanESOPNumberOfUnallocatedShares	394080	shares
CY2019Q4	ocfc	Employee Stock Ownership Plan Esop Number Of Unallocated Shares EmployeeStockOwnershipPlanESOPNumberOfUnallocatedShares	459711	shares
CY2020Q4	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	7300000	USD
CY2020Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	2477663	shares
CY2020Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	65631	shares
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	12500000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0103
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0263
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0265
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.23
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.21
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.21
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0333
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0270
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0219
CY2020	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Estimated Fair Value Of Options Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageEstimatedFairValueOfOptionsGranted	2.93
CY2019	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Estimated Fair Value Of Options Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageEstimatedFairValueOfOptionsGranted	4.47
CY2018	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Estimated Fair Value Of Options Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageEstimatedFairValueOfOptionsGranted	5.44
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2499000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2994000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	8513000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2424032	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.80
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2340842	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.25
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2489314	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	16.91
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	699651	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	20.44
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	461407	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	25.20
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	135107	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	27.39
CY2020	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionShares	0	shares
CY2020	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice	0
CY2019	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionShares	0	shares
CY2019	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice	0
CY2018	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionShares	491248	shares
CY2018	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice	21.92
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	213506	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	9.50
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	227189	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	11.24
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	765624	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.69
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	6357	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	21.26
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	149158	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	24.71
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	9203	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	28.42
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	64953	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	22.51
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	1870	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	29.59
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2838867	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.67
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2424032	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.80
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2340842	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.25
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1596927	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1612946	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1604576	shares
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	2838867	shares
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P5Y7M6D
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	20.67
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	1596927	shares
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P3Y6M
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.14
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3500000	USD
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	3400000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	451443	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	25.61
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	330598	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	25.92
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	169703	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.79
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	256649	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20.38
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	249651	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	24.80
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	272668	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	27.52
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	96564	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	24.41
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	105307	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	24.49
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	58754	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	20.81
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	35532	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	26.56
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	23499	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	26.38
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	53019	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	26.60
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	575996	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	23.42
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	451443	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	25.61
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	330598	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	25.92
CY2020Q4	ocfc	Other Commitments To Extend Credit At Fixed Rate OtherCommitmentsToExtendCreditAtFixedRate	234608000	USD
CY2020Q4	ocfc	Other Commitments To Extend Credit At Adjustable Rate OtherCommitmentsToExtendCreditAtAdjustableRate	2750000	USD
CY2020Q4	ocfc	Other Commitments To Extend Credit At Floating Rate OtherCommitmentsToExtendCreditAtFloatingRate	130448000	USD
CY2020	ocfc	Fixed Rate Loan Commitments Expiration Period FixedRateLoanCommitmentsExpirationPeriod	P90D
CY2020	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	60358000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	50701000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	47266000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	426000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	493000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	435000	shares
CY2020	ocfc	Unallocated Incentive Award Shares And Shares Held By Deferred Compensation Plan UnallocatedIncentiveAwardSharesAndSharesHeldByDeferredCompensationPlan	13000	shares
CY2019	ocfc	Unallocated Incentive Award Shares And Shares Held By Deferred Compensation Plan UnallocatedIncentiveAwardSharesAndSharesHeldByDeferredCompensationPlan	42000	shares
CY2018	ocfc	Unallocated Incentive Award Shares And Shares Held By Deferred Compensation Plan UnallocatedIncentiveAwardSharesAndSharesHeldByDeferredCompensationPlan	58000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	59919000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50166000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46773000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	153000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	580000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	884000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	60072000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50746000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47657000	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2242000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	993000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	504000	shares
CY2020Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	46500000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	13700000	USD
CY2020	ocfc	Numberof Finance Leases NumberofFinanceLeases	1	lease
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	22555000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18682000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1694000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1534000	USD
CY2020Q4	ocfc	Leases Rightof Use Asset LeasesRightofUseAsset	24249000	USD
CY2019Q4	ocfc	Leases Rightof Use Asset LeasesRightofUseAsset	20216000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	22990000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18893000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2100000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1953000	USD
CY2020Q4	ocfc	Leases Liability LeasesLiability	25090000	USD
CY2019Q4	ocfc	Leases Liability LeasesLiability	20846000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y9M7D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y8M8D
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2723000	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P8Y7M2D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P9Y7M6D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0301
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0345
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0563
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0563
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	6438000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	3904000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	174000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	274000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	110000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	174000	USD
CY2020	us-gaap	Lease Cost LeaseCost	6722000	USD
CY2019	us-gaap	Lease Cost LeaseCost	4352000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	6298000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	3625000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	110000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	174000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	187000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	263000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	307000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5725000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	307000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4713000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	307000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3285000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	307000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	307000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2281000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	1105000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	7592000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2640000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	26319000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	540000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3329000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2100000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	22990000	USD
CY2020	ocfc	Unsettled Trades Of Equity Securities UnsettledTradesOfEquitySecurities	8142000	USD
CY2019	ocfc	Unsettled Trades Of Equity Securities UnsettledTradesOfEquitySecurities	0	USD
CY2018	ocfc	Unsettled Trades Of Equity Securities UnsettledTradesOfEquitySecurities	0	USD
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	92562000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	92962000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	95877000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	98207000	USD
CY2020Q4	us-gaap	Interest Expense InterestExpense	14711000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	16174000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	17210000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	18562000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	77851000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	76788000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	78667000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	79645000	USD
CY2020Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4072000	USD
CY2020Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	35714000	USD
CY2020Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	9649000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	9969000	USD
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	73779000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	41074000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	69018000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	69676000	USD
CY2020Q4	us-gaap	Other Income OtherIncome	11032000	USD
CY2020Q3	us-gaap	Other Income OtherIncome	11755000	USD
CY2020Q2	us-gaap	Other Income OtherIncome	11282000	USD
CY2020Q1	us-gaap	Other Income OtherIncome	13542000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	24487000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	-3576000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	148000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	155000	USD
CY2020Q4	ocfc	Gain On Sale Ppp Loans GainOnSalePPPLoans	5101000	USD
CY2020Q3	ocfc	Gain On Sale Ppp Loans GainOnSalePPPLoans	0	USD
CY2020Q2	ocfc	Gain On Sale Ppp Loans GainOnSalePPPLoans	0	USD
CY2020Q1	ocfc	Gain On Sale Ppp Loans GainOnSalePPPLoans	0	USD
CY2020Q4	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	53053000	USD
CY2020Q3	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	52801000	USD
CY2020Q2	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	51075000	USD
CY2020Q1	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	51675000	USD
CY2020Q4	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	13333000	USD
CY2020Q3	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	0	USD
CY2020Q2	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	924000	USD
CY2020Q1	ocfc	Federal Home Loan Bank Advances Prepayment Fees Before Tax FederalHomeLoanBankAdvancesPrepaymentFeesBeforeTax	0	USD
CY2020Q4	ocfc	Branch Consolidation Expense BranchConsolidationExpense	3336000	USD
CY2020Q3	ocfc	Branch Consolidation Expense BranchConsolidationExpense	830000	USD
CY2020Q2	ocfc	Branch Consolidation Expense BranchConsolidationExpense	863000	USD
CY2020Q1	ocfc	Branch Consolidation Expense BranchConsolidationExpense	2594000	USD
CY2020Q4	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1194000	USD
CY2020Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3156000	USD
CY2020Q2	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3070000	USD
CY2020Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	8527000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	43483000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-7534000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	24516000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	20577000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10419000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2608000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5878000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4044000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	33064000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-4926000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	18638000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	16533000	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32060000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-6019000	USD
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18638000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16533000	USD
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.10
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.10
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	77075000	USD
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	76887000	USD
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	78410000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	76422000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	13721000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	13495000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	13573000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	12034000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63354000	USD
CY2019Q3	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	40884000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63392000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	64837000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	64388000	USD
CY2019Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	355000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	305000	USD
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	356000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	620000	USD
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	62999000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	63087000	USD
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	64481000	USD
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	63768000	USD
CY2019Q4	us-gaap	Other Income OtherIncome	11231000	USD
CY2019Q3	us-gaap	Other Income OtherIncome	11543000	USD
CY2019Q2	us-gaap	Other Income OtherIncome	9879000	USD
CY2019Q1	us-gaap	Other Income OtherIncome	9512000	USD
CY2019Q4	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	43589000	USD
CY2019Q2	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	43289000	USD
CY2019Q1	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	41827000	USD
CY2019Q4	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	4010000	USD
CY2019Q3	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	2473000	USD
CY2019Q2	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	7626000	USD
CY2019Q1	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	5444000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	26631000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	31273000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	23445000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	26009000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3181000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6302000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4465000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4836000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	23450000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	24971000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	18980000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	21173000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42

Files In Submission

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$OCFC
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2020 Q4 Form 10-K Financial Statement

#000100470221000026 Filed on March 01, 2021

Income Statement

Balance Sheet

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Facts In Submission

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$OCFC OCEANFIRST FINANCIAL CORP Stock $ocfc

2020 Q4 Form 10-K Financial Statement

#000100470221000026 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OCFC
OCEANFIRST FINANCIAL CORP Stock $ocfc