$OCFC
OCEANFIRST FINANCIAL CORP Stock $ocfc

$ocfc Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000100470220000027 Filed on February 28, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$72.36M	$71.38M	$70.08M
YoY Change	51.04%	48.62%	49.49%
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	$3.100M	$3.000M	$3.300M
YoY Change	40.91%	50.0%	50.0%
% of Gross Profit
Operating Expenses	$37.79M	$39.53M	$50.90M
YoY Change	42.97%	43.34%	78.44%
Operating Profit
YoY Change
Interest Expense	$10.52M	$9.878M	$8.631M
YoY Change	94.72%	98.59%	83.44%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$31.00M	$29.35M	$18.72M
YoY Change	54.23%	58.5%	72.55%
Income Tax	$4.269M	$5.278M	$3.018M
% Of Pretax Income	13.77%	17.98%	16.12%
Net Earnings	$26.73M	$24.07M	$15.70M
YoY Change	168.5%	87.81%	104.48%
Net Earnings / Revenue	36.94%	33.72%	22.41%
Basic Earnings Per Share	$0.56	$0.50	$0.33
Diluted Earnings Per Share	$0.55	$0.50	$0.32
COMMON SHARES
Basic Shares Outstanding	48.31M shares	47.69M shares	47.72M shares
Diluted Shares Outstanding		48.57M shares	48.70M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$122.3M	$149.1M	$254.5M
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	$111.2M	$112.3M	$113.8M
YoY Change	9.27%	74.55%	91.2%
Goodwill	$338.4M	$338.1M	$339.0M
YoY Change	124.88%	128.24%	128.37%
Intangibles	$16.97M	$17.95M	$18.95M
YoY Change	91.01%	91.41%	91.66%
Long-Term Investments
YoY Change
Other Assets	$68.00M	$67.00M	$70.00M
YoY Change	1033.33%	91.43%	94.44%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$7.516B	$7.563B	$7.737B
YoY Change	38.78%	40.47%	48.72%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$62.00M	$61.00M	$62.00M
YoY Change	-22.5%	-18.67%	-17.33%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$62.00M	$61.00M	$62.00M
YoY Change	-22.5%	-18.67%	-17.33%
LONG-TERM LIABILITIES
Long-Term Debt	$100.0M	$99.00M	$99.00M
YoY Change	75.44%	76.79%	73.68%
Other Long-Term Liabilities	$52.00M	$61.00M	$69.00M
YoY Change	13.04%	32.61%	137.93%
Total Long-Term Liabilities	$152.0M	$160.0M	$168.0M
YoY Change	47.57%	56.86%	95.35%
TOTAL LIABILITIES
Total Short-Term Liabilities	$62.00M	$61.00M	$62.00M
Total Long-Term Liabilities	$152.0M	$160.0M	$168.0M
Total Liabilities	$6.477B	$6.533B	$6.724B
YoY Change	34.54%	36.45%	45.71%
SHAREHOLDERS EQUITY
Retained Earnings	$305.1M	$286.5M	$273.7M
YoY Change	12.56%	7.67%	5.91%
Common Stock	$758.4M	$757.4M	$752.7M
YoY Change	113.82%	113.87%	112.85%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.84M	$0.00	$0.00
YoY Change	-32.13%	-100.0%	-100.0%
Treasury Stock Shares	459.3K shares	0.000 shares	0.000 shares
Shareholders Equity	$1.039B	$1.030B	$1.013B
YoY Change
Total Liabilities & Shareholders Equity	$7.516B	$7.563B	$7.737B
YoY Change	38.78%	40.47%	48.72%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$26.73M	$24.07M	$15.70M
YoY Change	168.5%	87.81%	104.48%
Depreciation, Depletion And Amortization	$3.100M	$3.000M	$3.300M
YoY Change	40.91%	50.0%	50.0%
Cash From Operating Activities	$30.40M	$28.00M	$26.50M
YoY Change	74.71%	-13.85%	45.6%
INVESTING ACTIVITIES
Capital Expenditures	-$1.100M	-$3.900M	-$4.600M
YoY Change	-97.23%	-44.29%	360.0%
Acquisitions
YoY Change
Other Investing Activities	$11.60M	$63.40M	-$101.1M
YoY Change	-108.17%	-329.71%	19.5%
Cash From Investing Activities	$10.60M	$59.60M	-$105.8M
YoY Change	-105.84%	-272.25%	23.6%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-67.70M	-192.9M	214.4M
YoY Change	-465.95%	-228.86%	-107300.0%
NET CHANGE
Cash From Operating Activities	30.40M	28.00M	26.50M
Cash From Investing Activities	10.60M	59.60M	-105.8M
Cash From Financing Activities	-67.70M	-192.9M	214.4M
Net Change In Cash	-26.70M	-105.3M	135.1M
YoY Change	-81.67%	-171.34%	-299.85%
FREE CASH FLOW
Cash From Operating Activities	$30.40M	$28.00M	$26.50M
Capital Expenditures	-$1.100M	-$3.900M	-$4.600M
Free Cash Flow	$31.50M	$31.90M	$31.10M
YoY Change	-44.83%	-19.24%	61.98%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001004702
CY2019	ocfc	Maturity Period Of Short Term Interest Bearing Securities Included In Cash And Cash Equivalents MaturityPeriodOfShortTermInterestBearingSecuritiesIncludedInCashAndCashEquivalents	Three months or less
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CY2018	ocfc	Other Comprehensive Income Accretion Of Fair Value Adjustment On Held To Maturity Securities Tax OtherComprehensiveIncomeAccretionOfFairValueAdjustmentOnHeldToMaturitySecuritiesTax	1186000	USD
CY2019	ocfc	Other Comprehensive Income Accretion Of Fair Value Adjustment On Held To Maturity Securities Tax OtherComprehensiveIncomeAccretionOfFairValueAdjustmentOnHeldToMaturitySecuritiesTax	404000	USD
CY2018Q4	ocfc	Specific Reserves On Nonaccrual Troubled Debt Restructurings SpecificReservesOnNonaccrualTroubledDebtRestructurings	0	USD
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
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CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
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CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	47951168	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50405048	shares
CY2018Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	26509000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	21646000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Restricted HeldToMaturitySecuritiesRestricted	550735000	USD
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CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
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CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-11713
CY2019	dei	Entity Registrant Name EntityRegistrantName	OceanFirst Financial Corp.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	22-3412577
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	110 West Front Street
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Red Bank
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	NJ
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	07701
CY2019	dei	City Area Code CityAreaCode	732
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CY2019	dei	Security12b Title Security12bTitle	Common stock, $0.01 par value per share
CY2019	dei	Trading Symbol TradingSymbol	OCFC
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2019	us-gaap	Equipment Expense EquipmentExpense	7719000	USD
CY2018	us-gaap	Equipment Expense EquipmentExpense	8319000	USD
CY2017	us-gaap	Equipment Expense EquipmentExpense	6769000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	3469000	USD
CY2018	us-gaap	Marketing Expense MarketingExpense	3415000	USD
CY2017	us-gaap	Marketing Expense MarketingExpense	2678000	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
CY2017	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2564000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	14814000	USD
CY2018	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	13286000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	8849000	USD
CY2019	ocfc	Check Card Processing CheckCardProcessing	5956000	USD
CY2018	ocfc	Check Card Processing CheckCardProcessing	4209000	USD
CY2017	ocfc	Check Card Processing CheckCardProcessing	3561000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	9338000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	4963000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	3995000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	14968000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	13509000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	10810000	USD
CY2019	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	4027000	USD
CY2018	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	3811000	USD
CY2017	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	2039000	USD
CY2019	ocfc	Branch Consolidation Expense BranchConsolidationExpense	9050000	USD
CY2018	ocfc	Branch Consolidation Expense BranchConsolidationExpense	3151000	USD
CY2017	ocfc	Branch Consolidation Expense BranchConsolidationExpense	6205000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10503000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	26911000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	8293000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	189142000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	186337000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	126520000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	107358000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	65325000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	85502000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18784000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13570000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22855000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42470000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.77
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.32
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.75
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.51
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.28
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
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32113000	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
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33125000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42470000	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
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-295000	USD
CY2019	ocfc	Other Comprehensive Income Accretion Of Net Unrealized Losses On Held To Maturity Securities Net Of Tax OtherComprehensiveIncomeAccretionOfNetUnrealizedLossesOnHeldToMaturitySecuritiesNetOfTax	587000	USD
CY2018	ocfc	Other Comprehensive Income Accretion Of Net Unrealized Losses On Held To Maturity Securities Net Of Tax OtherComprehensiveIncomeAccretionOfNetUnrealizedLossesOnHeldToMaturitySecuritiesNetOfTax	1719000	USD
CY2017	ocfc	Other Comprehensive Income Accretion Of Net Unrealized Losses On Held To Maturity Securities Net Of Tax OtherComprehensiveIncomeAccretionOfNetUnrealizedLossesOnHeldToMaturitySecuritiesNetOfTax	695000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	195000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2242000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1752000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	400000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	90816000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73684000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	42870000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	571903000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42470000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	400000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2181000	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2017	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	919000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	19286000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3354000	USD
CY2017	ocfc	Purchase Sale Of Stock For Deferred Compensation Plan PurchaseSaleOfStockForDeferredCompensationPlan	0	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
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	601941000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	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	Dividends Common Stock Cash DividendsCommonStockCash	29564000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5324000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	402554000	USD
CY2018	ocfc	Purchase Sale Of Stock For Deferred Compensation Plan PurchaseSaleOfStockForDeferredCompensationPlan	0	USD
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	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	ocfc	Purchase Sale Of Stock For Deferred Compensation Plan PurchaseSaleOfStockForDeferredCompensationPlan	0	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	26066000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1153119000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	88574000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	71932000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42470000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8363000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8706000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6303000	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
CY2017	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	919000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	3861000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3038000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	2181000	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
CY2017	ocfc	Tax Expense Benefit From Shared Based Compensation TaxExpenseBenefitFromSharedBasedCompensation	1823000	USD
CY2019	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	4027000	USD
CY2018	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	3811000	USD
CY2017	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	2039000	USD
CY2019	us-gaap	Business Acquisitions Purchase Price Allocation Year Of Acquisition Net Effect On Income BusinessAcquisitionsPurchasePriceAllocationYearOfAcquisitionNetEffectOnIncome	14094000	USD
CY2018	us-gaap	Business Acquisitions Purchase Price Allocation Year Of Acquisition Net Effect On Income BusinessAcquisitionsPurchasePriceAllocationYearOfAcquisitionNetEffectOnIncome	16733000	USD
CY2017	us-gaap	Business Acquisitions Purchase Price Allocation Year Of Acquisition Net Effect On Income BusinessAcquisitionsPurchasePriceAllocationYearOfAcquisitionNetEffectOnIncome	8216000	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
CY2017	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	85000	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
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3216000	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
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	74000	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
CY2017	ocfc	Net Accretion Amortizationof Deferred Feesand Discountson Loans NetAccretionAmortizationofDeferredFeesandDiscountsonLoans	-509000	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
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4445000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16053000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4568000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	35440000	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
CY2017	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1119000	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
CY2017	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	6084000	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
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-150000	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
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	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
CY2017	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	100000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	1023000	USD
CY2018	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	2794000	USD
CY2017	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	5282000	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
CY2017	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	3872000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5420000	USD
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5105000	USD
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3299000	USD
CY2019	ocfc	Gain Losson Saleof Assets Heldfor Sale GainLossonSaleofAssetsHeldforSale	-17000	USD
CY2018	ocfc	Gain Losson Saleof Assets Heldfor Sale GainLossonSaleofAssetsHeldforSale	1245000	USD
CY2017	ocfc	Gain Losson Saleof Assets Heldfor Sale GainLossonSaleofAssetsHeldforSale	0	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
CY2017	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	2265000	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
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5375000	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
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5235000	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
CY2017	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	37661000	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
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	80131000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	215881000	USD
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-103889000	USD
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	138271000	USD
CY2019	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	101674000	USD
CY2018	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	199580000	USD
CY2017	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	37337000	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
CY2017	ocfc	Proceeds From Sale Of High Risk Loans ProceedsFromSaleOfHighRiskLoans	11186000	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
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	69987000	USD
CY2019	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	4381000	USD
CY2018	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	6486000	USD
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	125324000	USD
CY2019	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	0	USD
CY2018	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	0	USD
CY2017	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	165501000	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
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	29299000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	18501000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	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
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	18233000	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
CY2017	ocfc	Proceedsfrom Maturities Repaymentsand Callsof Debt Securities Fvni Availableforsale ProceedsfromMaturitiesRepaymentsandCallsofDebtSecuritiesFVNIAvailableforsale	0	USD
CY2019	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	123833000	USD
CY2018	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	119125000	USD
CY2017	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	96383000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	870000	USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2708000	USD
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	624000	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
CY2017	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	19738000	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
CY2017	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	20149000	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
CY2017	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	3880000	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
CY2017	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	0	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
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	48698000	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Investing Activities PaymentForContingentConsiderationLiabilityInvestingActivities	46950000	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
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
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-455223000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	65687000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-143025000	USD
CY2017	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	155849000	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
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	39733000	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
CY2017	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	10000000	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
CY2017	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	1922000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	263000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	439000	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
CY2017	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	-2874000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1335000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5324000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3354000	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
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1522000	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
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	ocfc	Acquisitionof Common Stockby Esop AcquisitionofCommonStockbyESOP	0	USD
CY2018	ocfc	Acquisitionof Common Stockby Esop AcquisitionofCommonStockbyESOP	8400000	USD
CY2017	ocfc	Acquisitionof Common Stockby Esop AcquisitionofCommonStockbyESOP	0	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	34241000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29564000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19286000	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
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	183332000	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
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-191760000	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
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	301373000	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
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	120792000	USD
CY2017Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	109613000	USD
CY2016Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	301373000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	1536000	USD
CY2017Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2016Q4	us-gaap	Restricted Cash RestrictedCash	0	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
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	301373000	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
CY2019	us-gaap	Interest Paid Net InterestPaidNet	52315000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	36447000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	20219000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	20006000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	2317000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	6008000	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
CY2017	ocfc	Accretion Of Unrealized Loss On Securities Reclassified To Held To Maturity AccretionOfUnrealizedLossOnSecuritiesReclassifiedToHeldToMaturity	1145000	USD
CY2019	ocfc	Net Loans Charged Off NetLoansChargedOff	1361000	USD
CY2018	ocfc	Net Loans Charged Off NetLoansChargedOff	2634000	USD
CY2017	ocfc	Net Loans Charged Off NetLoansChargedOff	3907000	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
CY2017	ocfc	Transfer Of Premisesand Equipmentto Assets Heldfor Sale TransferOfPremisesandEquipmenttoAssetsHeldforSale	5729000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	963000	USD
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	992000	USD
CY2017	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	3726000	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	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
CY2017	ocfc	Noncash Or Part Noncash Acquisition Advances To Federal Home Loan Bank NoncashOrPartNoncashAcquisitionAdvancesToFederalHomeLoanBank	0	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
CY2017	ocfc	Non Cash Or Part Non Cash Acquisition Loans NonCashOrPartNonCashAcquisitionLoans	0	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	0	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
CY2017	ocfc	Noncash Or Part Noncash Acquisition Accrued Interest Receivable NoncashOrPartNoncashAcquisitionAccruedInterestReceivable	0	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
CY2017	ocfc	Noncash Or Part Noncash Acquisition Bank Owned Life Insurance NoncashOrPartNoncashAcquisitionBankOwnedLifeInsurance	0	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
CY2017	ocfc	Noncash Or Part Noncash Acquisition Deferred Tax Asset NoncashOrPartNoncashAcquisitionDeferredTaxAsset	0	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	0	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	0	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	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
CY2017	ocfc	Noncash Or Part Noncash Acquisition Deposits Assumed NoncashOrPartNoncashAcquisitionDepositsAssumed	0	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
CY2017	ocfc	Noncash Or Part Noncash Acquisition Federal Home Loan Bank Advances NoncashOrPartNoncashAcquisitionFederalHomeLoanBankAdvances	0	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	0	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
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	0	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<div style="line-height:120%;padding-top:18px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Business</span></div><div style="line-height:120%;padding-top:6px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Bank provides a range of community banking services to customers through a network of branches and offices throughout New Jersey and the metropolitan areas of Philadelphia and New York City. The Bank is subject to competition from other financial institutions and certain technology companies; it is also subject to the regulations of certain regulatory agencies and undergoes periodic examinations by those regulatory authorities.</span></div>
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
CY2019	ocfc	Minimum Period Of Loans Past Due MinimumPeriodOfLoansPastDue	P90D
CY2019	ocfc	Minimum Amount Of Nonaccrual Business And Commercial Real Estate Loans Evaluated Individually For Impairment MinimumAmountOfNonaccrualBusinessAndCommercialRealEstateLoansEvaluatedIndividuallyForImpairment	250000	USD
CY2019	ocfc	Mortgage Loan On Real Estate Delinquent Period MortgageLoanOnRealEstateDelinquentPeriod	P120D
CY2019	us-gaap	Allowance For Loan And Lease Losses Loans Acquired AllowanceForLoanAndLeaseLossesLoansAcquired	0	USD
CY2019	ocfc	Mortgage Loan Sold On Real Estate Maturity Period MortgageLoanSoldOnRealEstateMaturityPeriod	P15Y
CY2019Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.040
CY2019Q4	ocfc	Common Equity Tier One Capital To Risk Weighted Assets CommonEquityTierOneCapitalToRiskWeightedAssets	0.070
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.085
CY2019Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.105
CY2019Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.050
CY2019Q4	ocfc	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.065
CY2019Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.080
CY2019Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.100
CY2018Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04000
CY2018Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2019	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.02500
CY2018	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.01875
CY2016	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.00625
CY2017	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.0125
CY2018	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.01875
CY2019	ocfc	Capital Conservation Buffer Percent CapitalConservationBufferPercent	0.0250
CY2019	ocfc	Business Combination It Expenses BusinessCombinationITExpenses	2514000	USD
CY2018	ocfc	Business Combination It Expenses BusinessCombinationITExpenses	6017000	USD
CY2017	ocfc	Business Combination It Expenses BusinessCombinationITExpenses	3956000	USD
CY2019	ocfc	Business Combination Professional Fees BusinessCombinationProfessionalFees	4239000	USD
CY2018	ocfc	Business Combination Professional Fees BusinessCombinationProfessionalFees	4414000	USD
CY2017	ocfc	Business Combination Professional Fees BusinessCombinationProfessionalFees	2771000	USD
CY2019	ocfc	Business Combination Control Payments BusinessCombinationControlPayments	2942000	USD
CY2018	ocfc	Business Combination Control Payments BusinessCombinationControlPayments	15660000	USD
CY2017	ocfc	Business Combination Control Payments BusinessCombinationControlPayments	1177000	USD
CY2019	ocfc	Business Combination Miscellaneous Expenses BusinessCombinationMiscellaneousExpenses	808000	USD
CY2018	ocfc	Business Combination Miscellaneous Expenses BusinessCombinationMiscellaneousExpenses	820000	USD
CY2017	ocfc	Business Combination Miscellaneous Expenses BusinessCombinationMiscellaneousExpenses	389000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10503000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	26911000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	8293000	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	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
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	ocfc	Available For Sale Securities And Held To Maturity Securities Estimated Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesEstimatedFairValue	928250000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	101522000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	163000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	968000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	100717000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	851903000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	1303000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	20391000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	832815000	USD
CY2018Q4	ocfc	Available For Sale Securities And Held To Maturity Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturityAmortizedCost	953425000	USD
CY2018Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Gain AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedGain	1466000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	54000	USD
CY2018Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedLoss	21359000	USD
CY2018Q4	ocfc	Available For Sale Securities And Held To Maturity Securities Estimated Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesEstimatedFairValue	933532000	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
CY2019Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	772975000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	851903000	USD
CY2019	ocfc	Other Comprehensive Income Loss Transfers From Available For Sale Securities To Held To Maturity OtherComprehensiveIncomeLossTransfersFromAvailableForSaleSecuritiesToHeldToMaturity	-13347000	USD
CY2018	ocfc	Other Comprehensive Income Loss Transfers From Available For Sale Securities To Held To Maturity OtherComprehensiveIncomeLossTransfersFromAvailableForSaleSecuritiesToHeldToMaturity	-13347000	USD
CY2019	ocfc	Other Comprehensive Income Reclassification Of Accretion Of Net Unrealized Losses To Held To Maturity Securities OtherComprehensiveIncomeReclassificationOfAccretionOfNetUnrealizedLossesToHeldToMaturitySecurities	9245000	USD
CY2018	ocfc	Other Comprehensive Income Reclassification Of Accretion Of Net Unrealized Losses To Held To Maturity Securities OtherComprehensiveIncomeReclassificationOfAccretionOfNetUnrealizedLossesToHeldToMaturitySecurities	8254000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	768873000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	846810000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	248000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Amount Callable Amortized Cost AvailableForSaleAndHeldToMaturitySecuritiesAmountCallableAmortizedCost	59400000	USD
CY2019Q4	ocfc	Available For Sale And Held To Maturity Securities Amount Callable Fair Value Disclosure AvailableForSaleAndHeldToMaturitySecuritiesAmountCallableFairValueDisclosure	57400000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	69635000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	69723000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	203081000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	205520000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	71590000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	70118000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	13800000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	13815000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	358106000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	359176000	USD
CY2019Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Other Debt Obligations At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForOtherDebtObligationsAtFairValue	475600000	USD
CY2018Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Other Debt Obligations At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForOtherDebtObligationsAtFairValue	563100000	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 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
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1978000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	8000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	66438000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	960000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	68416000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	968000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	118203000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	924000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	556536000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	19467000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	674739000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	20391000	USD
CY2018Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	120181000	USD
CY2018Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAggregateLosses	932000	USD
CY2018Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	622974000	USD
CY2018Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAggregateLosses	20427000	USD
CY2018Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	743155000	USD
CY2018Q4	ocfc	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Losses AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLosses	21359000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Before Fees Gross LoansAndLeasesReceivableBeforeFeesGross	6201387000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Before Fees Gross LoansAndLeasesReceivableBeforeFeesGross	5579812000	USD
CY2019Q4	us-gaap	Certain Loans And Debt Securities Acquired In Transfer No Allowance Recorded And No Subsequent Impairment CertainLoansAndDebtSecuritiesAcquiredInTransferNoAllowanceRecordedAndNoSubsequentImpairment	13265000	USD
CY2018Q4	us-gaap	Certain Loans And Debt Securities Acquired In Transfer No Allowance Recorded And No Subsequent Impairment CertainLoansAndDebtSecuritiesAcquiredInTransferNoAllowanceRecordedAndNoSubsequentImpairment	8901000	USD
CY2019Q4	ocfc	Loans And Leases Receivable Before Fees Gross Including Purchased Credit Impaired Loans LoansAndLeasesReceivableBeforeFeesGrossIncludingPurchasedCreditImpairedLoans	6214652000	USD
CY2018Q4	ocfc	Loans And Leases Receivable Before Fees Gross Including Purchased Credit Impaired Loans LoansAndLeasesReceivableBeforeFeesGrossIncludingPurchasedCreditImpairedLoans	5588713000	USD
CY2019Q4	ocfc	Loans And Leases Deferred Origination Costs LoansAndLeasesDeferredOriginationCosts	9880000	USD
CY2018Q4	ocfc	Loans And Leases Deferred Origination Costs LoansAndLeasesDeferredOriginationCosts	7086000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16852000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16577000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6207680000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	5579222000	USD
CY2019Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	3851000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16577000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	15721000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	15183000	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
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4445000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	2804000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	3841000	USD
CY2017	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	5384000	USD
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1443000	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1207000	USD
CY2017	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1477000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16852000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16577000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	15721000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16577000	USD
CY2019	ocfc	Provision Benefitfor Loanand Lease ProvisionBenefitforLoanandLease	1636000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	2804000	USD
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1443000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16852000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	15721000	USD
CY2018	ocfc	Provision Benefitfor Loanand Lease ProvisionBenefitforLoanandLease	3490000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	3841000	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1207000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	16577000	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	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6201387000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	16577000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16577000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	29797000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5550015000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5579812000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	24313000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	29797000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	2197000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	0	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	26510000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	29797000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	476000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0	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
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	29800000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0	USD
CY2019	ocfc	Average Balances Of Impaired Loans AverageBalancesOfImpairedLoans	29400000	USD
CY2018	ocfc	Average Balances Of Impaired Loans AverageBalancesOfImpairedLoans	38100000	USD
CY2017	ocfc	Average Balances Of Impaired Loans AverageBalancesOfImpairedLoans	39800000	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
CY2017	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	639000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	24600000	USD
CY2019Q4	ocfc	Loans And Leases Receivable Impaired Troubled Debt Restructuring Performing Loan Amount LoansAndLeasesReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	18000000.0	USD
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	26500000	USD
CY2018Q4	ocfc	Loans And Leases Receivable Impaired Troubled Debt Restructuring Performing Loan Amount LoansAndLeasesReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	22900000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	17849000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	17415000	USD
CY2019Q4	ocfc	Loans And Leases Receivable Commitments To Lend Additional Funds On Non Accrual Loans LoansAndLeasesReceivableCommitmentsToLendAdditionalFundsOnNonAccrualLoans	0	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	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6201387000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	9573000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	39728000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5540084000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5579812000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	17800000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	17400000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	20900000	USD
CY2019Q4	ocfc	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDueAndStillAccruing	0	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	3472730000	USD
CY2018Q4	us-gaap	Notes Receivable Net NotesReceivableNet	3060579000	USD
CY2019	ocfc	Non Accrual Troubled Debt Restructurings NonAccrualTroubledDebtRestructurings	6600000	USD
CY2018	ocfc	Non Accrual Troubled Debt Restructurings NonAccrualTroubledDebtRestructurings	3600000	USD
CY2017	ocfc	Non Accrual Troubled Debt Restructurings NonAccrualTroubledDebtRestructurings	8800000	USD
CY2019Q4	ocfc	Specific Reserves On Nonaccrual Troubled Debt Restructurings SpecificReservesOnNonaccrualTroubledDebtRestructurings	476000	USD
CY2017Q4	ocfc	Specific Reserves On Nonaccrual Troubled Debt Restructurings SpecificReservesOnNonaccrualTroubledDebtRestructurings	0	USD
CY2019Q4	ocfc	Loans And Leases Receivable Impaired Troubled Debt Restructuring Performing Loan Amount LoansAndLeasesReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	18000000.0	USD
CY2018Q4	ocfc	Loans And Leases Receivable Impaired Troubled Debt Restructuring Performing Loan Amount LoansAndLeasesReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	22900000	USD
CY2017Q4	ocfc	Loans And Leases Receivable Impaired Troubled Debt Restructuring Performing Loan Amount LoansAndLeasesReceivableImpairedTroubledDebtRestructuringPerformingLoanAmount	33300000	USD
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1
CY2018	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	49000	USD
CY2018	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	50000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3630000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	161000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	691000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	2646000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	2613000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	2257000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	1317000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	3080000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3025000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3630000	USD
CY2019Q4	ocfc	Interest And Dividends Receivable Loans InterestAndDividendsReceivableLoans	17664000	USD
CY2018Q4	ocfc	Interest And Dividends Receivable Loans InterestAndDividendsReceivableLoans	15905000	USD
CY2019Q4	ocfc	Interest And Dividends Receivable Investment Securities InterestAndDividendsReceivableInvestmentSecurities	2827000	USD
CY2018Q4	ocfc	Interest And Dividends Receivable Investment Securities InterestAndDividendsReceivableInvestmentSecurities	2490000	USD
CY2019Q4	ocfc	Interest And Dividends Receivable Mortgage Backed Securities InterestAndDividendsReceivableMortgageBackedSecurities	1183000	USD
CY2018Q4	ocfc	Interest And Dividends Receivable Mortgage Backed Securities InterestAndDividendsReceivableMortgageBackedSecurities	1294000	USD
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	21674000	USD
CY2018Q4	us-gaap	Interest Receivable InterestReceivable	19689000	USD
CY2019Q4	ocfc	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	2572000	USD
CY2019Q4	ocfc	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciationand Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationandAmortization	162267000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	167538000	USD
CY2019Q4	ocfc	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	59576000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	56329000	USD
CY2019Q4	ocfc	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	102691000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	111209000	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
CY2017	ocfc	Depreciation Depletionand Amortization Netof Purchase Accounting Accretionand Amortization DepreciationDepletionandAmortizationNetofPurchaseAccountingAccretionandAmortization	6300000	USD
CY2019Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	238000	USD
CY2018Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	430000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1377396000	USD
CY2019Q4	ocfc	Non Interest Bearing Deposit Liabilities Weighted Average Cost Percentage NonInterestBearingDepositLiabilitiesWeightedAverageCostPercentage	0
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1151362000	USD
CY2018Q4	ocfc	Non Interest Bearing Deposit Liabilities Weighted Average Cost Percentage NonInterestBearingDepositLiabilitiesWeightedAverageCostPercentage	0
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	2539428000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Checking WeightedAverageRateDomesticDepositChecking	0.0068
CY2018Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	2350106000	USD
CY2018Q4	us-gaap	Weighted Average Rate Domestic Deposit Checking WeightedAverageRateDomesticDepositChecking	0.0051
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	578147000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0068
CY2018Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	569680000	USD
CY2018Q4	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0066
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	898174000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0013
CY2018Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	877177000	USD
CY2018Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0012
CY2019Q4	us-gaap	Time Deposits TimeDeposits	935632000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit Time Deposits WeightedAverageRateDomesticDepositTimeDeposits	0.0182
CY2018Q4	us-gaap	Time Deposits TimeDeposits	866244000	USD
CY2018Q4	us-gaap	Weighted Average Rate Domestic Deposit Time Deposits WeightedAverageRateDomesticDepositTimeDeposits	0.0150
CY2019Q4	us-gaap	Deposits Deposits	6328777000	USD
CY2019Q4	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0062
CY2018Q4	us-gaap	Deposits Deposits	5814569000	USD
CY2018Q4	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0051
CY2019Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	150600000	USD
CY2018Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	124300000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	522246000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	257040000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	104241000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	34341000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	16902000	USD
CY2019Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	862000	USD
CY2019Q4	us-gaap	Time Deposits TimeDeposits	935632000	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
CY2017	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	4533000	USD
CY2019	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	4919000	USD
CY2018	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	2818000	USD
CY2017	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	1213000	USD
CY2019	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	1195000	USD
CY2018	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	990000	USD
CY2017	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	345000	USD
CY2019	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	15498000	USD
CY2018	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	9551000	USD
CY2017	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	6245000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	38432000	USD
CY2018	us-gaap	Interest Expense Deposits InterestExpenseDeposits	22578000	USD
CY2017	us-gaap	Interest Expense Deposits InterestExpenseDeposits	12336000	USD
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	519260000	USD
CY2018Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	449383000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	71739000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	61760000	USD
CY2019Q4	us-gaap	Other Borrowings OtherBorrowings	96801000	USD
CY2018Q4	us-gaap	Other Borrowings OtherBorrowings	99530000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	687800000	USD
CY2018Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	610673000	USD
CY2019	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	387925000	USD
CY2018	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	382464000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	519260000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	675802000	USD
CY2019	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0218
CY2018	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0206
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	359724000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From One To Two Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate	24743000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	92793000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	0	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	42000000	USD
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	519260000	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
CY2017	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	4486000	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
CY2017	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	121000	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
CY2017	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	2668000	USD
CY2019	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	14391000	USD
CY2018	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	13574000	USD
CY2017	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	7275000	USD
CY2019	ocfc	Federal Home Loan Bank Stock Percentage Of Minimum Investment FederalHomeLoanBankStockPercentageOfMinimumInvestment	0.00125
CY2019	ocfc	Percentage Of Transactions Between Federal Home Loan Bank And Bank PercentageOfTransactionsBetweenFederalHomeLoanBankAndBank	0.045
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1991000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	18030000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-12754000	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
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	169000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2731000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	18138000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-12585000	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
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	35440000	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
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16053000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4568000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	35440000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18784000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13570000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22855000	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
CY2017	ocfc	Unrealized Gains Loss On Securities Tax Expense UnrealizedGainsLossOnSecuritiesTaxExpense	276000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	1800000	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
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	65325000	USD
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
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
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
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22864000	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
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	839000	USD
CY2019	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	77000	USD
CY2018	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	125000	USD
CY2017	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	223000	USD
CY2019	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	151000	USD
CY2018	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	136000	USD
CY2017	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	230000	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
CY2017	ocfc	Income Tax Reconciliation Deductions Earnings On Life Insurance IncomeTaxReconciliationDeductionsEarningsOnLifeInsurance	1155000	USD
CY2019	ocfc	Income Tax Reconciliation Merger Related Expenses IncomeTaxReconciliationMergerRelatedExpenses	297000	USD
CY2018	ocfc	Income Tax Reconciliation Merger Related Expenses IncomeTaxReconciliationMergerRelatedExpenses	322000	USD
CY2017	ocfc	Income Tax Reconciliation Merger Related Expenses IncomeTaxReconciliationMergerRelatedExpenses	478000	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
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	110000	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
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1823000	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
CY2017	ocfc	Effective Income Tax Rate Reconciliation Revaluationof State Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationRevaluationofStateDeferredTaxAssetAmount	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
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	3643000	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
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	48000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	104000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-416000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18784000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13570000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22855000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	4107000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	3501000	USD
CY2019Q4	ocfc	Deferred Tax Assets Reserve For Repurchased Loans DeferredTaxAssetsReserveForRepurchasedLoans	112000	USD
CY2018Q4	ocfc	Deferred Tax Assets Reserve For Repurchased Loans DeferredTaxAssetsReserveForRepurchasedLoans	55000	USD
CY2019Q4	ocfc	Deferred Tax Assets On Non Accrual Interest DeferredTaxAssetsOnNonAccrualInterest	212000	USD
CY2018Q4	ocfc	Deferred Tax Assets On Non Accrual Interest DeferredTaxAssetsOnNonAccrualInterest	119000	USD
CY2019Q4	ocfc	Deferred Incentive Compensation And Other Charges DeferredIncentiveCompensationAndOtherCharges	1397000	USD
CY2018Q4	ocfc	Deferred Incentive Compensation And Other Charges DeferredIncentiveCompensationAndOtherCharges	1302000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	591000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	529000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	2737000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	334000	USD
CY2019Q4	ocfc	Deferred Tax Asset Stock Option Plan DeferredTaxAssetStockOptionPlan	1270000	USD
CY2018Q4	ocfc	Deferred Tax Asset Stock Option Plan DeferredTaxAssetStockOptionPlan	950000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	178000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	142000	USD
CY2019Q4	ocfc	Deferred Tax Assets Fair Value Adjustments On Acquisitions DeferredTaxAssetsFairValueAdjustmentsOnAcquisitions	8475000	USD
CY2018Q4	ocfc	Deferred Tax Assets Fair Value Adjustments On Acquisitions DeferredTaxAssetsFairValueAdjustmentsOnAcquisitions	16142000	USD
CY2019Q4	ocfc	Deferred Tax Assets Net Operating Loss Carry Forwards Related To Acquisition DeferredTaxAssetsNetOperatingLossCarryForwardsRelatedToAcquisition	39519000	USD
CY2018Q4	ocfc	Deferred Tax Assets Net Operating Loss Carry Forwards Related To Acquisition DeferredTaxAssetsNetOperatingLossCarryForwardsRelatedToAcquisition	44436000	USD
CY2019Q4	ocfc	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	0	USD
CY2018Q4	ocfc	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	90000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	826000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	1225000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1438000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1266000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	4746000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1410000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	65608000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	71501000	USD
CY2019Q4	ocfc	Deferred Tax Liabilities Accretion Of Discount On Investment Securities DeferredTaxLiabilitiesAccretionOfDiscountOnInvestmentSecurities	380000	USD
CY2018Q4	ocfc	Deferred Tax Liabilities Accretion Of Discount On Investment Securities DeferredTaxLiabilitiesAccretionOfDiscountOnInvestmentSecurities	232000	USD
CY2019Q4	ocfc	Deferred Tax Liabilities Deferred Loan Fees And Costs DeferredTaxLiabilitiesDeferredLoanFeesAndCosts	2379000	USD
CY2018Q4	ocfc	Deferred Tax Liabilities Deferred Loan Fees And Costs DeferredTaxLiabilitiesDeferredLoanFeesAndCosts	1478000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7340000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4350000	USD
CY2019Q4	ocfc	Deferred Tax Liabilities Tax Effects Of Undistributed Earnings DeferredTaxLiabilitiesTaxEffectsOfUndistributedEarnings	4735000	USD
CY2018Q4	ocfc	Deferred Tax Liabilities Tax Effects Of Undistributed Earnings DeferredTaxLiabilitiesTaxEffectsOfUndistributedEarnings	1730000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	707000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	334000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	15541000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	8124000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	50067000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	63377000	USD
CY2019Q4	us-gaap	Statutory Accounting Practices Portion Of Excess Retained Earnings Not Taxed StatutoryAccountingPracticesPortionOfExcessRetainedEarningsNotTaxed	10800000	USD
CY2019Q4	ocfc	Unrecognized Deferred Tax Liability On Retained Earnings Not Provided For Provision For Income Tax UnrecognizedDeferredTaxLiabilityOnRetainedEarningsNotProvidedForProvisionForIncomeTax	2600000	USD
CY2019Q4	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
CY2019Q4	ocfc	Employee Stock Ownership Plan Esop Shares Contributed To Esop Value EmployeeStockOwnershipPlanESOPSharesContributedToESOPValue	1500000	USD
CY2018Q4	ocfc	Employee Stock Ownership Plan Esop Shares Contributed To Esop Value EmployeeStockOwnershipPlanESOPSharesContributedToESOPValue	1400000	USD
CY2019	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	357000	USD
CY2018	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	287000	USD
CY2019Q4	us-gaap	Employee Stock Ownership Plan Esop Debt Structure Direct Loan Amount EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount	9300000	USD
CY2018Q4	us-gaap	Employee Stock Ownership Plan Esop Debt Structure Direct Loan Amount EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount	10400000	USD
CY2019Q4	ocfc	Employee Stock Ownership Plan Esop Number Of Unallocated Shares EmployeeStockOwnershipPlanESOPNumberOfUnallocatedShares	459711	shares
CY2018Q4	ocfc	Employee Stock Ownership Plan Esop Number Of Unallocated Shares EmployeeStockOwnershipPlanESOPNumberOfUnallocatedShares	525241	shares
CY2019Q4	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	11700000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	10400000	USD
CY2019Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	2412132	shares
CY2019Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	65531	shares
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0231
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
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.21
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0207
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
CY2017	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Estimated Fair Value Of Options Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageEstimatedFairValueOfOptionsGranted	5.62
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	7882000	USD
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
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2758833	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	14.94
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	335150	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	29.01
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
CY2017	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionShares	0	shares
CY2017	ocfc	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Acquisition Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice	0
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
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	567153	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	14.39
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	35099	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	18.42
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	2417	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	11.70
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
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
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1608762	shares
CY2019Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	2424032	shares
CY2019	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P4Y10M24D
CY2019Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	19.80
CY2019Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	1612946	shares
CY2019	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P3Y3M18D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	17.29
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	15400000	USD
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	14100000	USD
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
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	156945	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	17.25
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	69175	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	28.70
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	47379	shares
CY2017	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	17.32
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	9038	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	19.14
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
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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
CY2019Q4	ocfc	Other Commitments To Extend Credit At Fixed Rate OtherCommitmentsToExtendCreditAtFixedRate	197940000	USD
CY2019Q4	ocfc	Other Commitments To Extend Credit At Adjustable Rate OtherCommitmentsToExtendCreditAtAdjustableRate	2764000	USD
CY2019Q4	ocfc	Other Commitments To Extend Credit At Floating Rate OtherCommitmentsToExtendCreditAtFloatingRate	127010000	USD
CY2019	ocfc	Fixed Rate Loan Commitments Expiration Period FixedRateLoanCommitmentsExpirationPeriod	P90D
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5000000.0	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5200000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3200000	USD
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
CY2017	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	32490000	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
CY2017	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	311000	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
CY2017	ocfc	Unallocated Incentive Award Shares And Shares Held By Deferred Compensation Plan UnallocatedIncentiveAwardSharesAndSharesHeldByDeferredCompensationPlan	66000	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
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32113000	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
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1012000	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
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33125000	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
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	331000	shares
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	13700000	USD
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	4100000	USD
CY2019	ocfc	Numberof Finance Leases NumberofFinanceLeases	1	lease
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18682000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1534000	USD
CY2019Q4	ocfc	Leases Rightof Use Asset LeasesRightofUseAsset	20216000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18893000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1953000	USD
CY2019Q4	ocfc	Leases Liability LeasesLiability	20846000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y8M8D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P9Y7M6D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0345
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0563
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	3904000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	274000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	174000	USD
CY2019	us-gaap	Lease Cost LeaseCost	4352000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	3625000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	174000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	263000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	295000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3425000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	295000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3256000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	295000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2869000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	295000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2132000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	295000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1878000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	942000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	9165000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2417000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	22725000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	464000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3832000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1953000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18893000	USD
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	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	Noninterest Income NoninterestIncome	11231000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61504000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61447000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	55711000	USD
CY2018Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	506000	USD
CY2018Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	907000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	9879000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	9512000	USD
CY2019Q4	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	43589000	USD
CY2019Q3	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	40884000	USD
CY2018Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	706000	USD
CY2018Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1371000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	11543000	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
CY2018Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	72358000	USD
CY2018Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	71382000	USD
CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	70078000	USD
CY2018Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	62837000	USD
CY2018Q4	us-gaap	Interest Expense InterestExpense	10517000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	9878000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	8631000	USD
CY2018Q1	us-gaap	Interest Expense InterestExpense	7126000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61841000	USD
CY2018Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	61335000	USD
CY2018Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	60597000	USD
CY2018Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	60741000	USD
CY2018Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	54340000	USD
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	8748000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	8285000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	8883000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	8910000	USD
CY2018Q4	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	37794000	USD
CY2018Q3	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	37503000	USD
CY2018Q2	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	42470000	USD
CY2018Q1	ocfc	Operating Expenses Excluding Merger Relatedand Branch Consolidated Expenses OperatingExpensesExcludingMergerRelatedandBranchConsolidatedExpenses	38508000	USD
CY2018Q4	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	1288000	USD
CY2018Q3	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	2030000	USD
CY2018Q2	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	8434000	USD
CY2018Q1	ocfc	Merger Relatedand Branch Consolidation Expense MergerRelatedandBranchConsolidationExpense	18310000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	31001000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	29349000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	18720000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6432000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4269000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5278000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3018000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1005000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	26732000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	24071000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	15702000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	5427000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12

Files In Submission

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$OCFC
OCEANFIRST FINANCIAL CORP Stock $ocfc

2018 Q4 Form 10-K Financial Statement

#000100470220000027 Filed on February 28, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OCFC OCEANFIRST FINANCIAL CORP Stock $ocfc

2018 Q4 Form 10-K Financial Statement

#000100470220000027 Filed on February 28, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OCFC
OCEANFIRST FINANCIAL CORP Stock $ocfc