$CNOB
ConnectOne Bancorp, Inc. Stock $cnob

$cnob Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-K Financial Statement

#000120677421000555 Filed on March 01, 2021

Income Statement

Concept	2021 Q1	2020 Q4	2019 Q4
Revenue	$72.62M	$75.59M	$68.01M
YoY Change	-5.34%	11.15%	18.85%
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	$880.0K	$1.800M	$1.100M
YoY Change	-7.27%	63.64%	22.22%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$11.46M	$14.22M	$20.58M
YoY Change	-46.54%	-30.91%	20.6%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$43.87M	$33.41M	$26.98M
YoY Change	519.9%	23.84%	20.93%
Income Tax	$10.87M	$7.770M	$6.197M
% Of Pretax Income	24.78%	23.26%	22.97%
Net Earnings	$33.00M	$25.64M	$20.78M
YoY Change	447.25%	23.37%	11.31%
Net Earnings / Revenue	45.44%	33.92%	30.56%
Basic Earnings Per Share	$0.83	$0.64	$0.59
Diluted Earnings Per Share	$0.82	$0.64	$0.59
COMMON SHARES
Basic Shares Outstanding	39.79M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q1	2020 Q4	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$260.1M	$303.8M	$201.5M
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	$42.80M	$30.11M	$19.24M
YoY Change	-28.43%	56.52%	0.91%
Goodwill		$208.4M	$162.6M
YoY Change		28.17%	11.42%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$7.450B	$7.547B	$6.174B
YoY Change	2.34%	22.24%	13.03%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$15.30M	$18.00M	$16.40M
YoY Change	-46.69%	9.76%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$15.30M	$18.00M	$16.40M
YoY Change	-46.69%	9.76%
LONG-TERM LIABILITIES
Long-Term Debt	$152.7M	$202.6M	$128.9M
YoY Change	18.37%	57.18%	0.23%
Other Long-Term Liabilities	$35.00M	$26.20M	$29.70M
YoY Change	9.72%	-11.78%	8.0%
Total Long-Term Liabilities	$187.7M	$228.8M	$158.6M
YoY Change	16.66%	44.26%	1.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.30M	$18.00M	$16.40M
Total Long-Term Liabilities	$187.7M	$228.8M	$158.6M
Total Liabilities	$6.514B	$6.632B	$5.443B
YoY Change	1.38%	21.85%	12.27%
SHAREHOLDERS EQUITY
Retained Earnings		$332.0M	$271.8M
YoY Change		22.14%	28.6%
Common Stock		$586.9M	$468.6M
YoY Change		25.26%	13.58%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$30.27M	$29.36M
YoY Change		3.1%	75.63%
Treasury Stock Shares		2.659M shares	2.604M shares
Shareholders Equity	$935.6M	$915.3M	$731.2M
YoY Change
Total Liabilities & Shareholders Equity	$7.450B	$7.547B	$6.174B
YoY Change	2.34%	22.24%	13.03%

Cashflow Statement

Concept	2021 Q1	2020 Q4	2019 Q4
OPERATING ACTIVITIES
Net Income	$33.00M	$25.64M	$20.78M
YoY Change	447.25%	23.37%	11.31%
Depreciation, Depletion And Amortization	$880.0K	$1.800M	$1.100M
YoY Change	-7.27%	63.64%	22.22%
Cash From Operating Activities	$80.13M	-$18.70M	-$2.700M
YoY Change	72.47%	592.59%	-112.39%
INVESTING ACTIVITIES
Capital Expenditures	$67.00K	-$1.300M	-$200.0K
YoY Change	-96.12%	550.0%	-60.0%
Acquisitions
YoY Change
Other Investing Activities	$5.700M	-$9.900M	$16.50M
YoY Change	-106.09%	-160.0%	-121.91%
Cash From Investing Activities	$5.622M	-$11.20M	$16.30M
YoY Change	-105.9%	-168.71%	-121.56%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$129.4M	77.50M	-6.200M
YoY Change	-199.38%	-1350.0%	-108.81%
NET CHANGE
Cash From Operating Activities	$80.13M	-18.70M	-2.700M
Cash From Investing Activities	$5.622M	-11.20M	16.30M
Cash From Financing Activities	-$129.4M	77.50M	-6.200M
Net Change In Cash	-$43.66M	47.60M	7.400M
YoY Change	-153.69%	543.24%	-55.42%
FREE CASH FLOW
Cash From Operating Activities	$80.13M	-$18.70M	-$2.700M
Capital Expenditures	$67.00K	-$1.300M	-$200.0K
Free Cash Flow	$80.06M	-$17.40M	-$2.500M
YoY Change	78.98%	596.0%	-111.21%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	cnob	Rolling Calculations Years RollingCalculationsYears	P3Y
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CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2020	dei	Amendment Flag AmendmentFlag	false
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CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000712771
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2020	us-gaap	Debt Instrument Issuance Date1 DebtInstrumentIssuanceDate1	2003-12-19
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CY2020	us-gaap	Subordinated Borrowing Due Date SubordinatedBorrowingDueDate	2034-01-23
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CY2020	cnob	Tax Provision On Gain On Sale Of Investments TaxProvisionOnGainOnSaleOfInvestments	6000	USD
CY2019	cnob	Tax Provision On Gain On Sale Of Investments TaxProvisionOnGainOnSaleOfInvestments	-79000	USD
CY2019	cnob	Gain Loss On Sale Of Investments Net Of Tax GainLossOnSaleOfInvestmentsNetOfTax	-201000	USD
CY2019	cnob	Stock Issued Shares In Acquisition Of Equity StockIssuedSharesInAcquisitionOfEquity	2500000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2746000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	731190000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	71289000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3944000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	11120000	USD
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	54693	shares
CY2020	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	911000	USD
CY2020	cnob	Net Restricted Stock Units Issued NetRestrictedStockUnitsIssued	16541	shares
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	35413	shares
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	233000	USD
CY2020	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	89879	shares
CY2020	cnob	Stock Grants Issued StockGrantsIssued	1340	shares
CY2020	cnob	Net Performance Units Issued Shares NetPerformanceUnitsIssuedShares	22402	shares
CY2020	cnob	Net Performance Units Issued NetPerformanceUnitsIssued		USD
CY2020	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-639000	USD
CY2020	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	118375000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2949000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	71289000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	4244000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3053000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3062000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	41000000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	8100000	USD
CY2018	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	21100000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2559000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1408000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	627000	USD
CY2020	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion	6687000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion	5056000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion	1127000	USD
CY2020	cnob	Accretion On Bank Premises AccretionOnBankPremises	90000	USD
CY2019	cnob	Accretion On Bank Premises AccretionOnBankPremises	86000	USD
CY2018	cnob	Accretion On Bank Premises AccretionOnBankPremises	67000	USD
CY2020	cnob	Accretion On Deposits AccretionOnDeposits	4301000	USD
CY2019	cnob	Accretion On Deposits AccretionOnDeposits	1149000	USD
CY2018	cnob	Accretion On Deposits AccretionOnDeposits	57000	USD
CY2020	cnob	Amortization Accretion On Borrowings Net AmortizationAccretionOnBorrowingsNet	183000	USD
CY2019	cnob	Amortization Accretion On Borrowings Net AmortizationAccretionOnBorrowingsNet	-209000	USD
CY2018	cnob	Amortization Accretion On Borrowings Net AmortizationAccretionOnBorrowingsNet	76000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7495000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	104000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	926000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2949000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2942000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	1884000	USD
CY2020	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	29000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	-280000	USD
CY2018	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss		USD
CY2020	cnob	Loss On Equity Securities Not Held For Trading LossOnEquitySecuritiesNotHeldForTrading	-202000	USD
CY2019	cnob	Loss On Equity Securities Not Held For Trading LossOnEquitySecuritiesNotHeldForTrading	-294000	USD
CY2018	cnob	Loss On Equity Securities Not Held For Trading LossOnEquitySecuritiesNotHeldForTrading	267000	USD
CY2020	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	2085000	USD
CY2019	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	512000	USD
CY2018	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	61000	USD
CY2020	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	63114000	USD
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	20499000	USD
CY2018	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	4121000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1047000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	80323000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	21011000	USD
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	4552000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment		USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	8000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-26000	USD
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate		USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	8000	USD
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-192000	USD
CY2020	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	4793000	USD
CY2019	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3484000	USD
CY2018	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3094000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5506000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4299000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3233000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	323000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	329000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	332000	USD
CY2020	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	11458000	USD
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	301000	USD
CY2018	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	2744000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	41000	USD
CY2019	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	1312000	USD
CY2018	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss		USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	22498000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	22619000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1134000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-4174000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2785000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4988000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	81125000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	60688000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	89060000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	338087000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	225853000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	140013000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	19624000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	183728000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	256782000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	178116000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	141859000	USD
CY2020	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-5362000	USD
CY2019	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-3739000	USD
CY2018	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-2361000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	2000000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity		USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity		USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity		USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	569000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities		USD
CY2020	cnob	Payments On Loans Held For Sale PaymentsOnLoansHeldForSale	1186000	USD
CY2019	cnob	Payments On Loans Held For Sale PaymentsOnLoansHeldForSale	47000	USD
CY2018	cnob	Payments On Loans Held For Sale PaymentsOnLoansHeldForSale	159000	USD
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	329210000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	243430000	USD
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	362625000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2199000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1527000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2051000	USD
CY2020	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	25000000	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	10000000	USD
CY2018	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies		USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1794000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies		USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	585000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment		USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	18000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1627000	USD
CY2020	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	87391000	USD
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	11211000	USD
CY2018	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition		USD
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	992000	USD
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	915000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	884000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-323365000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-102467000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-357214000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	410605000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	260489000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	297021000	USD
CY2020	cnob	Increase In Subordinated Debt IncreaseInSubordinatedDebt	73440000	USD
CY2019	cnob	Increase In Subordinated Debt IncreaseInSubordinatedDebt		USD
CY2018	cnob	Increase In Subordinated Debt IncreaseInSubordinatedDebt	73525000	USD
CY2020	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	1526489000	USD
CY2019	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	2597000000	USD
CY2018	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	1733000000	USD
CY2020	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	1650387000	USD
CY2019	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	2762150000	USD
CY2018	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	1803000000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14317000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	12160000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	9664000	USD
CY2020	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	911000	USD
CY2019	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	12643000	USD
CY2018	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity		USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	875000	USD
CY2018	cnob	Net Shares Issued In Satisfaction Of Performance Units Earned NetSharesIssuedInSatisfactionOfPerformanceUnitsEarned	819000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	290938000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	102273000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	29117000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	22784000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	74701000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	9092000	USD
CY2018	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	538000	USD
CY2018	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	45552000	USD
CY2018	cnob	Noncash Or Part Noncash Acquisition Loans Held For Sale Acquired1 NoncashOrPartNoncashAcquisitionLoansHeldForSaleAcquired1	21236000	USD
CY2018	cnob	Fair Value Of Net Assets Acquired Net Of Cash And Cash Equivalents FairValueOfNetAssetsAcquiredNetOfCashAndCashEquivalents		USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	79226000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:Times New Roman, Times, serif; font-size:10pt; text-align:left; margin-top:11pt; margin-bottom:0pt; "> <span style="font-weight:bold; font-style:italic; ">Use of Estimates</span></p> <p style="font-family:Times New Roman, Times, serif; font-size:10pt; text-align:left; margin-top:11pt; text-indent:36pt; margin-bottom:0pt; ">In preparing the consolidated financial statements, management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the consolidated statements of condition and that affect the results of operations for the periods presented. Actual results could differ significantly from those estimates. </p>
CY2020	cnob	Maximum Maturity Of Cash And Cash Equivalents MaximumMaturityOfCashAndCashEquivalents	P90D
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	5	Integer
CY2020	cnob	Non Accrual Contractual Due NonAccrualContractualDue	P90D
CY2020	cnob	Threshold Amount Of Loan For Evaluation Of Impairment ThresholdAmountOfLoanForEvaluationOfImpairment	250000	USD
CY2020Q1	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	118375000	USD
CY2020Q1	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	23977000	USD
CY2020Q1	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	142352000	USD
CY2019	cnob	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	35205	shares
CY2020	cnob	Incremental Shares From Assumed Conversions Of Options Performance Units And Restricted Shares IncrementalSharesFromAssumedConversionsOfOptionsPerformanceUnitsAndRestrictedShares	132	shares
CY2019	cnob	Incremental Shares From Assumed Conversions Of Options Performance Units And Restricted Shares IncrementalSharesFromAssumedConversionsOfOptionsPerformanceUnitsAndRestrictedShares	88	shares
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents	111368000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Marketable Securities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities	20073000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialAssets	774720000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	12826000	USD
CY2020	cnob	Dividends Paid On Earnings Allocated To Participating Securities DividendsPaidOnEarningsAllocatedToParticipatingSecurities	-356000	USD
CY2019	cnob	Dividends Paid On Earnings Allocated To Participating Securities DividendsPaidOnEarningsAllocatedToParticipatingSecurities	-295000	USD
CY2020	cnob	Income Attributable To Common Stock Value IncomeAttributableToCommonStockValue	70933000	USD
CY2019	cnob	Income Attributable To Common Stock Value IncomeAttributableToCommonStockValue	73100000	USD
CY2020	cnob	Weighted Average Common Shares Outstanding Including Participating Securities WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities	39643	shares
CY2019	cnob	Weighted Average Common Shares Outstanding Including Participating Securities WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities	35289	shares
CY2020	cnob	Weighted Average Participating Securities WeightedAverageParticipatingSecurities	-131	shares
CY2019	cnob	Weighted Average Participating Securities WeightedAverageParticipatingSecurities	-84	shares
CY2020	cnob	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	39512	shares
CY2020	cnob	Weighted Average Common And Equivalent Shares Outstanding WeightedAverageCommonAndEquivalentSharesOutstanding	39644	shares
CY2019	cnob	Weighted Average Common And Equivalent Shares Outstanding WeightedAverageCommonAndEquivalentSharesOutstanding	35293	shares
CY2020	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	29000	USD
CY2019	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	401000	USD
CY2020	cnob	Gain Loss On Sale Of Investments Net Of Tax GainLossOnSaleOfInvestmentsNetOfTax	23000	USD
CY2020	cnob	Number Of Investment Securities Sold NumberOfInvestmentSecuritiesSold	21	Integer
CY2019	cnob	Number Of Investment Securities Sold NumberOfInvestmentSecuritiesSold	53	Integer
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	10486000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	10541000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	19968000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	20180000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	18316000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	18797000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	155379000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	160474000	USD
CY2020Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	477326000	USD
CY2020Q4	cnob	Securities Available For Sale Net SecuritiesAvailableForSaleNet	487955000	USD
CY2020	cnob	Proceeds From Sale Of Investment Securities ProceedsFromSaleOfInvestmentSecurities	19624000	USD
CY2019	cnob	Proceeds From Sale Of Investment Securities ProceedsFromSaleOfInvestmentSecurities	183728000	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	40838000	USD
CY2020Q4	cnob	Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments	-386000	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	38365000	USD
CY2020Q4	cnob	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Accumulated In Investments AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments	-345000	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	2473000	USD
CY2020Q4	cnob	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses Accumulated In Investments AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments	-41000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	149428000	USD
CY2019Q4	cnob	Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments	-1222000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	72710000	USD
CY2019Q4	cnob	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Accumulated In Investments AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments	-309000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	76718000	USD
CY2019Q4	cnob	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses Accumulated In Investments AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments	-913000	USD
CY2020Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	6247681000	USD
CY2019Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	5118294000	USD
CY2020Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	11374000	USD
CY2019Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	4767000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	6236307000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	5113527000	USD
CY2020Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	2700000000	USD
CY2019Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	2500000000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4710000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	33250000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	13517000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	6553000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	253000	USD
CY2020Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1110000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1301000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1134000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	61696000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	49481000	USD
CY2020	cnob	Non Accrual Contractual Due NonAccrualContractualDue	P90D
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6247681000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5118294000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	54092000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	55914000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1301000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1134000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1387000	USD
CY2020	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	605000	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1286000	USD
CY2020	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	796000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	1119000	USD
CY2020	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	50854000	USD
CY2020	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	971000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	26458000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	71844000	USD
CY2020Q4	cnob	Impaired Financing Receivable With Related Allowance ImpairedFinancingReceivableWithRelatedAllowance	14314000	USD
CY2020	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	26347000	USD
CY2020	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod		USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	80550000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	127758000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	14314000	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	77201000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	971000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	63193000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	108804000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	64927000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	1575000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	3793000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	3793000	USD
CY2019Q4	cnob	Impaired Financing Receivable With Related Allowance ImpairedFinancingReceivableWithRelatedAllowance	1267000	USD
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	64672000	USD
CY2018	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	754000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	61696000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	98000000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	6149681000	USD
CY2020Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	6247681000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	3787000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	102000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	66986000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	112597000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1267000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	68714000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	1677000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	58184000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	113292000	USD
CY2018	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	46000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1748000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	1754000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	36000	USD
CY2018	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	1776000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	59932000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	115046000	USD
CY2018Q4	cnob	Impaired Financing Receivable With Related Allowance ImpairedFinancingReceivableWithRelatedAllowance	36000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	49481000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	58797000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5059497000	USD
CY2019Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	5118294000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	14314000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	59072000	USD
CY2020Q4	cnob	Allowance For Loan And Lease Losses Acquired Portfolio AllowanceForLoanAndLeaseLossesAcquiredPortfolio	5840000	USD
CY2020Q4	cnob	Allowance For Loan And Lease Losses Acquired With Deteriorated Credit Quality AllowanceForLoanAndLeaseLossesAcquiredWithDeterioratedCreditQuality		USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	79226000	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	80550000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5192274000	USD
CY2020Q4	cnob	Loans Receivable Acquired Portfolio LoansReceivableAcquiredPortfolio	961340000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	13517000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6247681000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1267000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	35784000	USD
CY2019Q4	cnob	Allowance For Loan And Lease Losses Acquired Portfolio AllowanceForLoanAndLeaseLossesAcquiredPortfolio	1242000	USD
CY2019Q4	cnob	Allowance For Loan And Lease Losses Acquired With Deteriorated Credit Quality AllowanceForLoanAndLeaseLossesAcquiredWithDeterioratedCreditQuality		USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	38293000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	66986000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4539568000	USD
CY2019Q4	cnob	Loans Receivable Acquired Portfolio LoansReceivableAcquiredPortfolio	505187000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	6553000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5118294000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	38293000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	900000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	21100000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	833000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	41000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	34954000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5076000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	315000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	8100000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	38293000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31748000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	18011000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	117000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	34954000	USD
CY2020	us-gaap	Troubled Debt Restructuring Debtor Current Period Gain Loss On Transfer Of Assets Net Of Tax TroubledDebtRestructuringDebtorCurrentPeriodGainLossOnTransferOfAssetsNetOfTax	49400000	USD
CY2020	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	25700000	USD
CY2020	cnob	Loans Performing Under Restructured Terms LoansPerformingUnderRestructuredTerms	23700000	USD
CY2019	us-gaap	Troubled Debt Restructuring Debtor Current Period Gain Loss On Transfer Of Assets Net Of Tax TroubledDebtRestructuringDebtorCurrentPeriodGainLossOnTransferOfAssetsNetOfTax	52000000.0	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	30600000	USD
CY2019	cnob	Loans Performing Under Restructured Terms LoansPerformingUnderRestructuredTerms	21400000	USD
CY2020	cnob	Specific Allowance SpecificAllowance	0	USD
CY2019	cnob	Specific Allowance SpecificAllowance	1300000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	5	Integer
CY2020	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	6486000	USD
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	6486000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	17	Integer
CY2019	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	26051000	USD
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	26051000	USD
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	40	Integer
CY2018	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	22666000	USD
CY2018	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	22666000	USD
CY2020Q4	cnob	Number Of Deferred Loans NumberOfDeferredLoans	113	Loans
CY2020Q4	cnob	Deferred Loan DeferredLoan	207081000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	92181000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	70041000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	62073000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	50805000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	30108000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19236000	USD
CY2020	us-gaap	Adjustment For Amortization AdjustmentForAmortization	4200000	USD
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	3100000	USD
CY2018	us-gaap	Adjustment For Amortization AdjustmentForAmortization	3100000	USD
CY2020Q4	cnob	Capital Lease In Premises And Equipment CapitalLeaseInPremisesAndEquipment	3408000	USD
CY2019Q4	cnob	Capital Lease In Premises And Equipment CapitalLeaseInPremisesAndEquipment	3408000	USD
CY2020Q4	cnob	Capital Lease In Premises And Equipment Excluding Accumulated Amortization CapitalLeaseInPremisesAndEquipmentExcludingAccumulatedAmortization	2038000	USD
CY2019Q4	cnob	Capital Lease In Premises And Equipment Excluding Accumulated Amortization CapitalLeaseInPremisesAndEquipmentExcludingAccumulatedAmortization	1867000	USD
CY2020Q4	cnob	Capital Lease In Premises And Equipment Net CapitalLeaseInPremisesAndEquipmentNet	1370000	USD
CY2019Q4	cnob	Capital Lease In Premises And Equipment Net CapitalLeaseInPremisesAndEquipmentNet	1541000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	321000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	321000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	323000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	353000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	353000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1029000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	2700000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	567000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	2133000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18000000.0	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.029	pure
CY2020	us-gaap	Lease Cost LeaseCost	4300000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	16400000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.030	pure
CY2019	us-gaap	Lease Cost LeaseCost	3100000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4229000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	3378000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	3060000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2523000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2231000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	4435000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	19856000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1830000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	18026000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	162574000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	145909000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	45798000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	16665000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss		USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss		USD
CY2020Q4	us-gaap	Goodwill Goodwill	208372000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	162574000	USD
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CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1116000	USD
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CY2020Q4	cnob	Time Deposit Maturities Fair Value Premium TimeDepositMaturitiesFairValuePremium	3367000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	1464132000	USD
CY2020Q4	cnob	Time Deposits250000 Or More TimeDeposits250000OrMore	409300000	USD
CY2019Q4	cnob	Time Deposits250000 Or More TimeDeposits250000OrMore	331600000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	425954000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0107	pure
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Par Value FederalHomeLoanBankAdvancesParValue	500293000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0196	pure
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryInNextRollingTwelveMonths	297570000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Next Twelve Rolling Months FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths	0.0084	pure
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryInNextRollingTwelveMonths	400000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Next Twelve Rolling Months FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths	0.0184	pure
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearTwo	75644000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Two FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearTwo	0.0142	pure
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearTwo	62000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Two FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearTwo	0.0226	pure
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearThree	50000000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Three FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearThree	0.0184	pure
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearThree	10737000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Three FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearThree	0.0245	pure
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFour		USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFour	25000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing In Rolling Year Four FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInRollingYearFour	0.0292	pure
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFive		USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryInRollingYearFive		USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary After Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryAfterRollingYearFive	2824000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing After Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingAfterRollingYearFive	0.0242	pure
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary After Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryAfterRollingYearFive	2882000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Maturing After Rolling Year Five FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingAfterRollingYearFive	0.0243	pure
CY2020Q4	cnob	Federal Home Loan Bank Advances Par Value Gross FederalHomeLoanBankAdvancesParValueGross	426038000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0107	pure
CY2019Q4	cnob	Federal Home Loan Bank Advances Par Value Gross FederalHomeLoanBankAdvancesParValueGross	500619000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0196	pure
CY2020Q4	cnob	Federal Home Loan Bank Advances Discount Premium FederalHomeLoanBankAdvancesDiscountPremium	84000	USD
CY2019Q4	cnob	Federal Home Loan Bank Advances Discount Premium FederalHomeLoanBankAdvancesDiscountPremium	326000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	425954000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	500293000	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	2000000000.0	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1000000000.0	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	10969000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	14616000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	13023000	USD
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CY2020	us-gaap	Proceeds From Issuance Of Trust Preferred Securities ProceedsFromIssuanceOfTrustPreferredSecurities	5000000	USD
CY2019	cnob	Liquidation Value Per Capital Share Description LiquidationValuePerCapitalShareDescription	$1,000 per Capital Security
CY2020	cnob	Liquidation Value Per Capital Share Description LiquidationValuePerCapitalShareDescription	$1,000 per Capital Security
CY2019	cnob	Rate Added To Libor RateAddedToLibor	Floating 3-month LIBOR + 285 Basis Points
CY2020	cnob	Rate Added To Libor RateAddedToLibor	Floating 3-month LIBOR + 285 Basis Points
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19590000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15509000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8902000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7006000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5018000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	954000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	26596000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	20527000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9856000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3881000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	916000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2455000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3614000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-812000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1529000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7495000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	104000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	926000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19101000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20631000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10782000	USD
CY2020	cnob	Temporary Surtax On Allocated Income TemporarySurtaxOnAllocatedIncome	1000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	90390000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	94026000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	71134000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	18982000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19745000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	14938000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1913000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3436000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1104000	USD
CY2020	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple		USD
CY2019	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple		USD
CY2018	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	-790000	USD
CY2020	cnob	Income Tax Effects Of Change In Bill IncomeTaxEffectsOfChangeInBill		USD
CY2019	cnob	Income Tax Effects Of Change In Bill IncomeTaxEffectsOfChangeInBill		USD
CY2018	cnob	Income Tax Effects Of Change In Bill IncomeTaxEffectsOfChangeInBill	-618000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	1052000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	732000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	650000	USD
CY2020	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	1491000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	2519000	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	1521000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	157000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-27000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1100000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	592000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	728000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-581000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19101000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20631000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10782000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	23399000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	11333000	USD
CY2020Q4	cnob	Deferred Tax Assets Purchase Accounting DeferredTaxAssetsPurchaseAccounting		USD
CY2019Q4	cnob	Deferred Tax Assets Purchase Accounting DeferredTaxAssetsPurchaseAccounting	4543000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1385000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions		USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4370000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	3424000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1835000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1440000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities		USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Trading Securities DeferredTaxAssetsUnrealizedLossesOnTradingSecurities	1509000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	357000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	20000	USD
CY2020Q4	cnob	Deferred Tax Asset Capital Lease DeferredTaxAssetCapitalLease	225000	USD
CY2019Q4	cnob	Deferred Tax Asset Capital Lease DeferredTaxAssetCapitalLease	230000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	51000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	69000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4519000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2240000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	36141000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	24808000	USD
CY2020Q4	cnob	Deferred Tax Liabilities Employee Benefit Plans DeferredTaxLiabilitiesEmployeeBenefitPlans	2161000	USD
CY2019Q4	cnob	Deferred Tax Liabilities Employee Benefit Plans DeferredTaxLiabilitiesEmployeeBenefitPlans	2131000	USD
CY2020Q4	cnob	Deferred Tax Liabilities Purchase Accounting DeferredTaxLiabilitiesPurchaseAccounting	1821000	USD
CY2019Q4	cnob	Deferred Tax Liabilities Purchase Accounting DeferredTaxLiabilitiesPurchaseAccounting		USD
CY2020Q4	cnob	Deferred Tax Liabilities Pension Actuarial Losses DeferredTaxLiabilitiesPensionActuarialLosses		USD
CY2019Q4	cnob	Deferred Tax Liabilities Pension Actuarial Losses DeferredTaxLiabilitiesPensionActuarialLosses	1062000	USD
CY2020Q4	cnob	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	187000	USD
CY2019Q4	cnob	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	1146000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	201000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	173000	USD
CY2020Q4	cnob	Deferred Tax Liabilities Market Discount Accretion DeferredTaxLiabilitiesMarketDiscountAccretion	428000	USD
CY2019Q4	cnob	Deferred Tax Liabilities Market Discount Accretion DeferredTaxLiabilitiesMarketDiscountAccretion	32000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	2171000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities		USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6969000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4544000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	29172000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	20264000	USD
CY2020Q4	us-gaap	Significant Supply Commitment Remaining Minimum Amount Committed SignificantSupplyCommitmentRemainingMinimumAmountCommitted	948799000	USD
CY2019Q4	us-gaap	Significant Supply Commitment Remaining Minimum Amount Committed SignificantSupplyCommitmentRemainingMinimumAmountCommitted	1036854000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	57409000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	56903000	USD
CY2020	cnob	Loans Payable New LoansPayableNew	1500000	USD
CY2019	cnob	Loans Payable New LoansPayableNew	8684000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	453000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1300000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	37375000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	8178000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	21534000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	57409000	USD
CY2020	us-gaap	Proceeds From Other Deposits ProceedsFromOtherDeposits	55400000	USD
CY2019	us-gaap	Proceeds From Other Deposits ProceedsFromOtherDeposits	24500000	USD
CY2020Q4	cnob	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Percentage TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssetsPercentage	0.0237	pure
CY2020Q4	cnob	Total Risk Based Capital Ratio TotalRiskBasedCapitalRatio	0.0350	pure
CY2020	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsTaxEffect	443000	USD
CY2019	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsTaxEffect	-190000	USD
CY2018	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsTaxEffect	-130000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	7859000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2724000	USD
CY2020Q4	cnob	Accumulated Other Comprehensive Income Loss Cash Flow Hedge AccumulatedOtherComprehensiveIncomeLossCashFlowHedge	1520000	USD
CY2019Q4	cnob	Accumulated Other Comprehensive Income Loss Cash Flow Hedge AccumulatedOtherComprehensiveIncomeLossCashFlowHedge	193000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	3542000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	3678000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2797000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1147000	USD
CY2020Q4	cnob	Increase Decrease Retained Earnings Deficit IncreaseDecreaseRetainedEarningsDeficit	709000	USD
CY2020Q4	cnob	Cumulative Effect Adjustment To Balance Sheet CumulativeEffectAdjustmentToBalanceSheet	55000	USD
CY2020	us-gaap	General Discussion Of Pension And Other Postretirement Benefits GeneralDiscussionOfPensionAndOtherPostretirementBenefits	The Company maintains a frozen noncontributory pension plan covering employees of the Company prior to the merger with Legacy ConnectOne. The benefits are based on years of service and the employee’s compensation over the prior five-year period. The plan’s benefits are payable in the form of a ten-year certain and life annuity. The plan is intended to be a tax-qualified defined benefit plan under Section 401(a) of the Internal Revenue Code. Payments may be made under the Pension Plan once attaining the normal retirement age of 65 and are generally equal to 44% of a participant’s highest average compensation over a 5-year period.
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	12533000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	364000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-5116000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1909000	USD
CY2020	cnob	Defined Benefit Plan Benefits Paid On Plan Assets DefinedBenefitPlanBenefitsPaidOnPlanAssets	721000	USD
CY2019	cnob	Defined Benefit Plan Benefits Paid On Plan Assets DefinedBenefitPlanBenefitsPaidOnPlanAssets	798000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	13476000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	12533000	USD
CY2020	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	1973000	USD
CY2019	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	2391000	USD
CY2020	cnob	Defined Benefit Plan Employer Contribtution Of Plan Assets DefinedBenefitPlanEmployerContribtutionOfPlanAssets		USD
CY2019	cnob	Defined Benefit Plan Employer Contribtution Of Plan Assets DefinedBenefitPlanEmployerContribtutionOfPlanAssets		USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	721000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	798000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	15868000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	14616000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	2392000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	2083000	USD
CY2020	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation Increase Decrease For Settlement And Curtailment DefinedBenefitPlanAccumulatedBenefitObligationIncreaseDecreaseForSettlementAndCurtailment	13500000	USD
CY2019	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation Increase Decrease For Settlement And Curtailment DefinedBenefitPlanAccumulatedBenefitObligationIncreaseDecreaseForSettlementAndCurtailment	12500000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	3000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-4926000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	364000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	453000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	427000	USD
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	784000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	697000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	765000	USD
CY2020	cnob	Defined Benefit Plan Amortization And Deferral Net DefinedBenefitPlanAmortizationAndDeferralNet	301000	USD
CY2019	cnob	Defined Benefit Plan Amortization And Deferral Net DefinedBenefitPlanAmortizationAndDeferralNet	358000	USD
CY2018	cnob	Defined Benefit Plan Amortization And Deferral Net DefinedBenefitPlanAmortizationAndDeferralNet	366000	USD
CY2020	us-gaap	Pension Expense PensionExpense	-119000	USD
CY2019	us-gaap	Pension Expense PensionExpense	114000	USD
CY2018	us-gaap	Pension Expense PensionExpense	28000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-190000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-150000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-595000	USD
CY2020	cnob	Defined Benefit Plan Amounts Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Before Tax DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeBeforeTax	-309000	USD
CY2019	cnob	Defined Benefit Plan Amounts Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Before Tax DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeBeforeTax	-36000	USD
CY2018	cnob	Defined Benefit Plan Amounts Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Before Tax DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeBeforeTax	-567000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0217	pure
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0299	pure
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease		pure
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease		pure
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0299	pure
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0405	pure
CY2020	cnob	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Rate Of Return On Plan Assets DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermRateOfReturnOnPlanAssets	0.0550	pure
CY2019	cnob	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Rate Of Return On Plan Assets DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermRateOfReturnOnPlanAssets	0.0550	pure
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease		pure
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease		pure
CY2019Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1	pure
CY2020Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1	pure
CY2020Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2019Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.055	pure
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.055	pure
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	15868000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	14616000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	754000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	733000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	712000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	699000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	697000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	3664000	USD
CY2020	us-gaap	Defined Benefit Plan Explanation Of Significant Change In Benefit Obligation Or Plan Assets Not Apparent From Other Required Disclosures DefinedBenefitPlanExplanationOfSignificantChangeInBenefitObligationOrPlanAssetsNotApparentFromOtherRequiredDisclosures	Beginning with the 2014 plan year, the 401(k) plan was amended to provide for a match of 50% of elective contributions, up to 6% of an employee’s contribution. In 2018, the 401 (k) plan was amended to provide for 100% matching of employee contributions up to 5%
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1600000	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1300000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	900000	USD
CY2020	cnob	Deferred Compensation Expense Related To Supplemental Executive Retirement Plan DeferredCompensationExpenseRelatedToSupplementalExecutiveRetirementPlan	400000	USD
CY2019	cnob	Deferred Compensation Expense Related To Supplemental Executive Retirement Plan DeferredCompensationExpenseRelatedToSupplementalExecutiveRetirementPlan	300000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	73426	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.19
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross		shares
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	35413	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.28
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod		shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	38013	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.04
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y2M12D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	409000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	38013	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	9.04
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y2M12D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	409000000	USD
CY2020Q4	us-gaap	Amount Available For Dividend Distribution Without Affecting Capital Adequacy Requirements AmountAvailableForDividendDistributionWithoutAffectingCapitalAdequacyRequirements	253500000	USD
CY2020Q1	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	25000000.0	USD
CY2019Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	50000000.0	USD
CY2020Q4	cnob	Notional Amount NotionalAmount	175000000	USD
CY2019Q4	cnob	Notional Amount NotionalAmount	150000000	USD
CY2020Q4	us-gaap	Derivative Average Fixed Interest Rate DerivativeAverageFixedInterestRate	0.0185	pure
CY2019Q4	us-gaap	Derivative Average Fixed Interest Rate DerivativeAverageFixedInterestRate	0.0182	pure
CY2020	cnob	Weighted Average Receive Rates WeightedAverageReceiveRates	0.0092	pure
CY2019	cnob	Weighted Average Receive Rates WeightedAverageReceiveRates	0.0237	pure
CY2020	us-gaap	Derivative Average Remaining Maturity1 DerivativeAverageRemainingMaturity1	P0Y9M18D
CY2019	us-gaap	Derivative Average Remaining Maturity1 DerivativeAverageRemainingMaturity1	P1Y6M
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-2119000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-273000	USD
CY2020	cnob	Interest Expense Of Interest Rate Cash Flow Hedge InterestExpenseOfInterestRateCashFlowHedge	1600000	USD
CY2019	cnob	Interest Expense Of Interest Rate Cash Flow Hedge InterestExpenseOfInterestRateCashFlowHedge	-700000	USD
CY2018	cnob	Interest Expense Of Interest Rate Cash Flow Hedge InterestExpenseOfInterestRateCashFlowHedge	-500000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	303756000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	303756000	USD
CY2020Q4	cnob	Available For Sale Securities Carrying Value AvailableForSaleSecuritiesCarryingValue	487955000	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	487955000	USD
CY2020Q4	us-gaap	Restricted Investments RestrictedInvestments	25099000	USD
CY2020Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue		USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	13387000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	13387000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6157081000	USD
CY2020Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	6244037000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	35317000	USD
CY2020Q4	us-gaap	Receivables Fair Value Disclosure ReceivablesFairValueDisclosure	35317000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1339108000	USD
CY2020Q4	cnob	Non Interest Bearing Deposits Fair Value Disclosure NonInterestBearingDepositsFairValueDisclosure	1339108000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	4620116000	USD
CY2020Q4	cnob	Interest Bearing Deposits Fair Value Disclosure InterestBearingDepositsFairValueDisclosure	4633961000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	425954000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	429671000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	202648000	USD
CY2020Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	214113000	USD
CY2020Q4	cnob	Derivatives Liabilities Carrying Amount DerivativesLiabilitiesCarryingAmount	2119000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	2119000	USD
CY2020Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	3687000	USD
CY2020Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	3687000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	201483000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	201483000	USD
CY2019Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	404701000	USD
CY2019Q4	cnob	Available For Sale Securities Carrying Value AvailableForSaleSecuritiesCarryingValue	404701000	USD
CY2019Q4	us-gaap	Restricted Investments RestrictedInvestments	27397000	USD
CY2019Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue		USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	11185000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	11185000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	5075234000	USD
CY2019Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	5096669000	USD
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	20949000	USD
CY2019Q4	us-gaap	Receivables Fair Value Disclosure ReceivablesFairValueDisclosure	20949000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	861728000	USD
CY2019Q4	cnob	Non Interest Bearing Deposits Fair Value Disclosure NonInterestBearingDepositsFairValueDisclosure	861728000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	3905814000	USD
CY2019Q4	cnob	Interest Bearing Deposits Fair Value Disclosure InterestBearingDepositsFairValueDisclosure	3917405000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	500293000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	502026000	USD
CY2019Q4	us-gaap	Subordinated Debt SubordinatedDebt	128885000	USD
CY2019Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	134973000	USD
CY2019Q4	cnob	Derivatives Liabilities Carrying Amount DerivativesLiabilitiesCarryingAmount	273000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	273000	USD
CY2019Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	4018000	USD
CY2019Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	4018000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	55281000	USD
CY2020Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	5000000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	32554000	USD
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	75588000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	77221000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	78677000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	76714000	USD
CY2020Q4	us-gaap	Interest Expense InterestExpense	14217000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	16672000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	17887000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	21433000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61371000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	60549000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	60790000	USD
CY2020Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	5000000	USD
CY2020Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	15000000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16000000	USD
CY2020Q4	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	3442000	USD
CY2020Q3	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	3483000	USD
CY2020Q2	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	4621000	USD
CY2020Q1	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	2854000	USD
CY2020Q4	us-gaap	Other General Expense OtherGeneralExpense	26402000	USD
CY2020Q3	us-gaap	Other General Expense OtherGeneralExpense	26478000	USD
CY2020Q2	us-gaap	Other General Expense OtherGeneralExpense	33063000.000	USD
CY2020Q1	us-gaap	Other General Expense OtherGeneralExpense	35058000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	33411000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	17348000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	7077000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7770000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7768000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2516000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1047000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	25641000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	24786000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	14832000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	6030000	USD
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.64
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2019Q3	us-gaap	Other General Expense OtherGeneralExpense	20379000	USD
CY2019Q2	us-gaap	Other General Expense OtherGeneralExpense	21590000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6440000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5501000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2493000	USD
CY2019Q1	us-gaap	Other General Expense OtherGeneralExpense	28062000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	20783000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	21696000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	19281000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	11635000	USD
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	68008000	USD
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	70389000	USD
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	67878000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	65209000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	20577000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	21983000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	22348000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	20257000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	47431000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	48406000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	45530000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	44952000	USD
CY2019Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	500000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2000000	USD
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1100000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4500000	USD
CY2019Q4	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	2246000	USD
CY2019Q3	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	2109000	USD
CY2019Q2	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	1942000	USD
CY2019Q1	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	1738000	USD
CY2019Q4	us-gaap	Other General Expense OtherGeneralExpense	22197000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	26980000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	28136000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	24782000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	14128000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6197000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.60
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33

Files In Submission

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$CNOB
ConnectOne Bancorp, Inc. Stock $cnob

2021 Q1 Form 10-K Financial Statement

#000120677421000555 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNOB ConnectOne Bancorp, Inc. Stock $cnob

2021 Q1 Form 10-K Financial Statement

#000120677421000555 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNOB
ConnectOne Bancorp, Inc. Stock $cnob