$CNOB
ConnectOne Bancorp, Inc. Stock $cnob

$cnob Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-K Financial Statement

#000120677422000559 Filed on February 25, 2022

Income Statement

Concept	2022 Q1	2021 Q4	2021 Q3
Revenue	$78.94M	$79.04M	$77.03M
YoY Change	8.7%	4.57%	-0.25%
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	$1.416M	$1.500M	$1.600M
YoY Change	60.91%	-16.67%	-11.11%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$8.583M	$8.579M	$8.781M
YoY Change	-25.09%	-39.66%	-47.33%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$42.73M	$45.34M	$42.98M
YoY Change	-2.59%	35.7%	32.02%
Income Tax	$11.35M	$12.30M	$10.88M
% Of Pretax Income	26.56%	27.13%	25.32%
Net Earnings	$31.38M	$33.04M	$32.10M
YoY Change	-4.9%	28.85%	29.5%
Net Earnings / Revenue	39.75%	41.8%	41.67%
Basic Earnings Per Share	$0.76	$0.79	$0.81
Diluted Earnings Per Share	$789.9K	$0.79	$0.80
COMMON SHARES
Basic Shares Outstanding	39.61M shares		39.65M
Diluted Shares Outstanding	39.73M		39.87M

Balance Sheet

Concept	2022 Q1	2021 Q4	2021 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$311.5M	$265.5M	$413.2M
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	$39.18M	$29.03M	$40.60M
YoY Change	-8.46%	-3.57%	-23.11%
Goodwill		$208.4M
YoY Change		0.0%
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	$8.334B	$8.129B	$7.950B
YoY Change	11.88%	7.71%	6.71%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$11.77M	$12.40M	$12.40M
YoY Change	-23.05%	-31.11%	-53.56%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$11.77M	$12.40M	$12.40M
YoY Change	-23.05%	-31.11%	-53.56%
LONG-TERM LIABILITIES
Long-Term Debt	$153.0M	$153.0M	$152.9M
YoY Change	0.21%	-24.48%	-24.53%
Other Long-Term Liabilities	$58.41M	$38.80M	$34.20M
YoY Change	66.88%	48.09%	39.02%
Total Long-Term Liabilities	$211.4M	$191.8M	$187.1M
YoY Change	12.64%	-16.17%	-17.65%
TOTAL LIABILITIES
Total Short-Term Liabilities	$11.77M	$12.40M	$12.40M
Total Long-Term Liabilities	$211.4M	$191.8M	$187.1M
Total Liabilities	$7.196B	$7.005B	$6.851B
YoY Change	10.47%	5.63%	4.46%
SHAREHOLDERS EQUITY
Retained Earnings		$440.2M	$414.0M
YoY Change		32.6%
Common Stock		$586.9M	$586.9M
YoY Change		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$39.67M	$38.31M
YoY Change		31.06%
Treasury Stock Shares		$2.989M	2.948M shares
Shareholders Equity	$1.139B	$1.124B	$1.098B
YoY Change
Total Liabilities & Shareholders Equity	$8.334B	$8.129B	$7.950B
YoY Change	11.88%	7.71%	6.71%

Cashflow Statement

Concept	2022 Q1	2021 Q4	2021 Q3
OPERATING ACTIVITIES
Net Income	$31.38M	$33.04M	$32.10M
YoY Change	-4.9%	28.85%	29.5%
Depreciation, Depletion And Amortization	$1.416M	$1.500M	$1.600M
YoY Change	60.91%	-16.67%	-11.11%
Cash From Operating Activities	$45.84M	$47.70M	$35.10M
YoY Change	-42.79%	-355.08%	45.64%
INVESTING ACTIVITIES
Capital Expenditures	-$718.0K	-$300.0K	-$2.000M
YoY Change	-1171.64%	-76.92%
Acquisitions
YoY Change
Other Investing Activities	-$159.5M	-$336.9M	-$176.5M
YoY Change	-2898.18%	3303.03%	-326.57%
Cash From Investing Activities	-$160.2M	-$337.2M	-$178.4M
YoY Change	-2949.77%	2910.71%	-329.01%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	160.4M	141.9M	207.0M
YoY Change	-223.92%	83.1%	-206.05%
NET CHANGE
Cash From Operating Activities	45.84M	47.70M	35.10M
Cash From Investing Activities	-160.2M	-337.2M	-178.4M
Cash From Financing Activities	160.4M	141.9M	207.0M
Net Change In Cash	46.01M	-147.6M	63.70M
YoY Change	-205.37%	-410.08%	-168.35%
FREE CASH FLOW
Cash From Operating Activities	$45.84M	$47.70M	$35.10M
Capital Expenditures	-$718.0K	-$300.0K	-$2.000M
Free Cash Flow	$46.56M	$48.00M	$37.10M
YoY Change	-41.84%	-375.86%	53.94%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000712771
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CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4710000	USD
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CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	6236307000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	78773000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	79226000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6749849000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6157081000	USD
CY2021Q4	us-gaap	Investment Owned Restricted Cost InvestmentOwnedRestrictedCost	27826000	USD
CY2020Q4	us-gaap	Investment Owned Restricted Cost InvestmentOwnedRestrictedCost	25099000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29032000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	30108000	USD
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	34152000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	35317000	USD
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	195731000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	165960000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	11017000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	16159000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	208372000	USD
CY2021	us-gaap	Subordinated Borrowing Due Date SubordinatedBorrowingDueDate	2034-01-23
CY2021	dei	Entity File Number EntityFileNumber	000-11486
CY2020Q4	us-gaap	Goodwill Goodwill	208372000	USD
CY2020Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	425954000	USD
CY2020	cnob	Redeemable By Issuer Beginning Date RedeemableByIssuerBeginningDate	2009-01-23
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CY2021	cnob	Redeemable By Issuer Beginning Date RedeemableByIssuerBeginningDate	2009-01-23
CY2021	cnob	Issuance Date Preferred Securities IssuanceDatePreferredSecurities	2003-12-19
CY2020	us-gaap	Subordinated Borrowing Due Date SubordinatedBorrowingDueDate	2034-01-23
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity Registrant Name EntityRegistrantName	ConnectOne Bancorp, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NJ
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	52-1273725
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	301 Sylvan Avenue
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Englewood Cliffs
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	NJ
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	07632
CY2021	dei	City Area Code CityAreaCode	201
CY2021	dei	Local Phone Number LocalPhoneNumber	816-8900
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2021	dei	Auditor Firm AuditorFirmId	173
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CY2021	us-gaap	Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed		USD
CY2020	us-gaap	Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed	14640000	USD
CY2019	us-gaap	Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed	8955000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1047000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1981000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2559000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1408000	USD
CY2021	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-269000	USD
CY2020	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-119000	USD
CY2019	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	114000	USD
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense		USD
CY2020	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	2333000	USD
CY2019	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense		USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	12786000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10236000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8598000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	109011000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	121001000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	92228000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	175058000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	90390000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	94026000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	44705000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	71289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	73395000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19101000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20631000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	130353000	USD
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1717000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact		USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact		USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	128636000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	71289000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	73395000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.24
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.08
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.22
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.07
CY2021	us-gaap	Net Income Loss NetIncomeLoss	130353000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	71289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	73395000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-11109000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	7005000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	11286000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2914000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1847000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	2923000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8195000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5158000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	8363000	USD
CY2021	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsBeforeTax	-195000	USD
CY2020	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsBeforeTax	-29000	USD
CY2019	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsBeforeTax	280000	USD
CY2021	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsTaxEffect	-48000	USD
CY2020	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsTaxEffect	-6000	USD
CY2019	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsTaxEffect	79000	USD
CY2021	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsNetOfTax	-147000	USD
CY2020	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsNetOfTax	-23000	USD
CY2019	cnob	Other Comprehensive Income Loss Reclassification Adjustment For Net Gains Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForNetGainsNetOfTax	201000	USD
CY2021	cnob	Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Before Tax UnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax	3593000	USD
CY2020	cnob	Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Before Tax UnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax	-3423000	USD
CY2019	cnob	Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Before Tax UnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax	-755000	USD
CY2021	cnob	Amortization Of Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Tax AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesTax	1012000	USD
CY2020	cnob	Amortization Of Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Tax AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesTax	-962000	USD
CY2019	cnob	Amortization Of Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Tax AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesTax	-213000	USD
CY2021	cnob	Amortization Of Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Net Of Tax AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax	2581000	USD
CY2020	cnob	Amortization Of Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Net Of Tax AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax	-2461000	USD
CY2019	cnob	Amortization Of Unrealized Holding Gains On Securities Transferred From Available For Sale To Held To Maturity Securities Net Of Tax AmortizationOfUnrealizedHoldingGainsOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax	-542000	USD
CY2021	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsBeforeTax	1873000	USD
CY2020	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsBeforeTax	1577000	USD
CY2019	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsBeforeTax	-677000	USD
CY2021	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Tax Effect OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsTaxEffect	528000	USD
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
CY2021	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsNetOfTax	1345000	USD
CY2020	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsNetOfTax	1134000	USD
CY2019	cnob	Other Comprehensive Income Reclassification Adjustment For Net Gains Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForNetGainsNetOfTax	-487000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	209000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax		USD
CY2020	cnob	Reclassification Adjustment For Realized Losses Included In Net Income Tax Effect ReclassificationAdjustmentForRealizedLossesIncludedInNetIncomeTaxEffect	84000	USD
CY2019	cnob	Reclassification Adjustment For Realized Losses Included In Net Income Tax Effect ReclassificationAdjustmentForRealizedLossesIncludedInNetIncomeTaxEffect	101000	USD
CY2021	cnob	Reclassification Adjustment For Realized Losses Included In Net Income Net Of Tax ReclassificationAdjustmentForRealizedLossesIncludedInNetIncomeNetOfTax	215000	USD
CY2020	cnob	Reclassification Adjustment For Realized Losses Included In Net Income Net Of Tax ReclassificationAdjustmentForRealizedLossesIncludedInNetIncomeNetOfTax	217000	USD
CY2019	cnob	Reclassification Adjustment For Realized Losses Included In Net Income Net Of Tax ReclassificationAdjustmentForRealizedLossesIncludedInNetIncomeNetOfTax	257000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent		USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	112000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4201000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3944000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7642000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	126152000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75233000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	81037000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	613927000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	73395000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	31000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	59000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent		USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	81000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	150000	USD
CY2021	cnob	Reclassification Adjustment For Realized Losses Included In Net Income ReclassificationAdjustmentForRealizedLossesIncludedInNetIncome	299000	USD
CY2020	cnob	Reclassification Adjustment For Realized Losses Included In Net Income ReclassificationAdjustmentForRealizedLossesIncludedInNetIncome	301000	USD
CY2019	cnob	Reclassification Adjustment For Realized Losses Included In Net Income ReclassificationAdjustmentForRealizedLossesIncludedInNetIncome	358000	USD
CY2021	cnob	Reclassification Adjustment For Realized Losses Included In Net Income Tax Effect ReclassificationAdjustmentForRealizedLossesIncludedInNetIncomeTaxEffect	84000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7642000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.36
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	12958000	USD
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	540018	shares
CY2019	cnob	Repurchase Of Treasury Stock RepurchaseOfTreasuryStock	-12643000	USD
CY2019	cnob	Net Restricted Stock Units Issued NetRestrictedStockUnitsIssued	4904	shares
CY2019	cnob	Net Restricted Stock Units Issued Equity NetRestrictedStockUnitsIssuedEquity		USD
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	38937	shares
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	360000	USD
CY2019	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	56772	shares
CY2019	cnob	Restricted Stock Issued In Acquisition Of Entity RestrictedStockIssuedInAcquisitionOfEntity		USD
CY2019	cnob	Net Performance Units Issued Shares NetPerformanceUnitsIssuedShares	31425	shares
CY2019	cnob	Net Performance Units Issued NetPerformanceUnitsIssued	196000	USD
CY2019	cnob	Stock Issued In Acquisition Of Entity StockIssuedInAcquisitionOfEntity	56025000	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	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	54693	shares
CY2020	cnob	Repurchase Of Treasury Stock RepurchaseOfTreasuryStock	-911000	USD
CY2020	cnob	Net Restricted Stock Units Issued NetRestrictedStockUnitsIssued	16541	shares
CY2020	cnob	Net Restricted Stock Units Issued Equity NetRestrictedStockUnitsIssuedEquity		USD
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 Issued During Period Value Restricted Stock And Performance Units Award Gross1 StockIssuedDuringPeriodValueRestrictedStockAndPerformanceUnitsAwardGross1		USD
CY2020	cnob	Stock Grants Issued StockGrantsIssued	1340	shares
CY2020	us-gaap	Stock Granted During Period Value Sharebased Compensation Gross StockGrantedDuringPeriodValueSharebasedCompensationGross		USD
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
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	915310000	USD
CY2021	cnob	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification1 NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification1	-2925000	USD
CY2020Q4	cnob	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjusted	912385000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	130353000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4201000	USD
CY2021	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	0.371875
CY2021	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	1717000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	17493000	USD
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	14247	shares
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	106000	USD
CY2021	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	44836	shares
CY2021	cnob	Stock Issued During Period Value Restricted Stock And Performance Units Award Gross1 StockIssuedDuringPeriodValueRestrictedStockAndPerformanceUnitsAwardGross1		USD
CY2021	cnob	Stock Grants Issued StockGrantsIssued	4981	shares
CY2021	us-gaap	Stock Granted During Period Value Sharebased Compensation Gross StockGrantedDuringPeriodValueSharebasedCompensationGross		USD
CY2021	cnob	Net Restricted Stock Units Issued NetRestrictedStockUnitsIssued	14711	shares
CY2021	cnob	Net Restricted Stock Units Issued Equity NetRestrictedStockUnitsIssuedEquity		USD
CY2021	cnob	Net Performance Units Issued Shares NetPerformanceUnitsIssuedShares	34458	shares
CY2021	cnob	Net Performance Units Issued NetPerformanceUnitsIssued		USD
CY2021	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	-1283000	USD
CY2021	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	330541	shares
CY2021	cnob	Repurchase Of Treasury Stock RepurchaseOfTreasuryStock	-9401000	USD
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	115000	shares
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	110927000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4536000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1124212000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	130353000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	71289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	73395000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3757000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	4244000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3053000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-5500000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	41000000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	8100000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1980000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2559000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1408000	USD
CY2021	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion	5350000	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
CY2021	cnob	Accretion On Bank Premises AccretionOnBankPremises	73000	USD
CY2020	cnob	Accretion On Bank Premises AccretionOnBankPremises	90000	USD
CY2019	cnob	Accretion On Bank Premises AccretionOnBankPremises	86000	USD
CY2021	cnob	Accretion On Deposits AccretionOnDeposits	2224000	USD
CY2020	cnob	Accretion On Deposits AccretionOnDeposits	4301000	USD
CY2019	cnob	Accretion On Deposits AccretionOnDeposits	1149000	USD
CY2021	cnob	Amortization Accretion On Borrowings Net AmortizationAccretionOnBorrowingsNet	36000	USD
CY2020	cnob	Amortization Accretion On Borrowings Net AmortizationAccretionOnBorrowingsNet	183000	USD
CY2019	cnob	Amortization Accretion On Borrowings Net AmortizationAccretionOnBorrowingsNet	-209000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7495000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	104000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	4536000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2949000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2942000	USD
CY2021	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	195000	USD
CY2020	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	29000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	-280000	USD
CY2021	cnob	Loss On Equity Securities Not Held For Trading LossOnEquitySecuritiesNotHeldForTrading	373000	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
CY2021	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	3807000	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
CY2021	cnob	Gain On Sale Of Branches GainOnSaleOfBranches	674000	USD
CY2020	cnob	Gain On Sale Of Branches GainOnSaleOfBranches		USD
CY2019	cnob	Gain On Sale Of Branches GainOnSaleOfBranches		USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-65000	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		USD
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	18000	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		USD
CY2021	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	51669000	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
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1047000	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	72233000	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
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets		USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets		USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	8000	USD
CY2021	cnob	Gains Losses On Sales Of Other Real Estate Net GainsLossesOnSalesOfOtherRealEstateNet		USD
CY2020	cnob	Gains Losses On Sales Of Other Real Estate Net GainsLossesOnSalesOfOtherRealEstateNet		USD
CY2019	cnob	Gains Losses On Sales Of Other Real Estate Net GainsLossesOnSalesOfOtherRealEstateNet	8000	USD
CY2021	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	4771000	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
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5966000	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
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	303000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	323000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	329000	USD
CY2021	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-1165000	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
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	-769000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	41000	USD
CY2019	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	1312000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-46086000	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
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	10526000	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
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	202273000	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
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	349500000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	338087000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	225853000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment		USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	19624000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	183728000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	285873000	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
CY2021	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	2727000	USD
CY2020	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-5362000	USD
CY2019	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-3739000	USD
CY2021	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	780000	USD
CY2020	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	2000000	USD
CY2019	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment		USD
CY2021	us-gaap	Proceeds From Sale And Maturity Of Trading Securities Heldforinvestment ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment		USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Trading Securities Heldforinvestment ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment		USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Trading Securities Heldforinvestment ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment	569000	USD
CY2021	cnob	Payments On Loans Held For Sale PaymentsOnLoansHeldForSale	38000	USD
CY2020	cnob	Payments On Loans Held For Sale PaymentsOnLoansHeldForSale	1186000	USD
CY2019	cnob	Payments On Loans Held For Sale PaymentsOnLoansHeldForSale	47000	USD
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	596389000	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
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2783000	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
CY2021	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	25000000	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
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies		USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1794000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies		USD
CY2021	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment	1087000	USD
CY2020	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment		USD
CY2019	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment		USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt		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
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition		USD
CY2020	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	87391000	USD
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	11211000	USD
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	321000	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
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-689860000	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
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	375953000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	410605000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	260489000	USD
CY2021	cnob	Increase In Subordinated Debt IncreaseInSubordinatedDebt	-50000000	USD
CY2020	cnob	Increase In Subordinated Debt IncreaseInSubordinatedDebt	73440000	USD
CY2019	cnob	Increase In Subordinated Debt IncreaseInSubordinatedDebt		USD
CY2021	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	340000000	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
CY2021	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	297725000	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
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	1717000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock		USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock		USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	17493000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14317000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	12160000	USD
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	110927000	USD
CY2020	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock		USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock		USD
CY2021	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	9401000	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
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	106000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	233000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	360000	USD
CY2021	cnob	Net Shares Issued In Satisfaction Of Performance Units Earned NetSharesIssuedInSatisfactionOfPerformanceUnitsEarned	1283000	USD
CY2020	cnob	Net Shares Issued In Satisfaction Of Performance Units Earned NetSharesIssuedInSatisfactionOfPerformanceUnitsEarned	639000	USD
CY2019	cnob	Net Shares Issued In Satisfaction Of Performance Units Earned NetSharesIssuedInSatisfactionOfPerformanceUnitsEarned		USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	449367000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	344513000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	70896000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-38220000	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
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	303756000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	201483000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	172366000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	265536000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	303756000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	201483000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	41787000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	74701000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	88522000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	45431000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26548000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18497000	USD
CY2021	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	304000	USD
CY2020	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate		USD
CY2019	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	907000	USD
CY2021	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	4293000	USD
CY2020	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	10995000	USD
CY2019	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1		USD
CY2021	cnob	Noncash Or Part Noncash Acquisition Loans Held For Sale Acquired1 NoncashOrPartNoncashAcquisitionLoansHeldForSaleAcquired1	16628000	USD
CY2020	cnob	Noncash Or Part Noncash Acquisition Loans Held For Sale Acquired1 NoncashOrPartNoncashAcquisitionLoansHeldForSaleAcquired1	26548000	USD
CY2019	cnob	Noncash Or Part Noncash Acquisition Loans Held For Sale Acquired1 NoncashOrPartNoncashAcquisitionLoansHeldForSaleAcquired1	33297000	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	<p style="font-family:Times New Roman, Times, serif; font-size:10pt; text-align:left; margin-top:11pt; margin-bottom:0pt; "> <span style="text-decoration:underline #000000; font-weight:bold; font-style:italic; ">Nature of Operations</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; ">ConnectOne Bancorp, Inc. (the “Parent Corporation”) is incorporated under the laws of the State of New Jersey and is a registered bank holding company under the Bank Holding Company Act of 1956, as amended (the “BHCA”). The Parent Corporation’s business currently consists of the operation of its wholly-owned subsidiary, ConnectOne Bank (the “Bank” and, collectively with the Parent Corporation and the Parent Corporation’s subsidiaries, the “Company”). The Bank’s subsidiaries include Union Investment Co. (a New Jersey investment company), Twin Bridge Investment Co. (a New Jersey investment company), ConnectOne Preferred Funding Corp. (a New Jersey real estate investment trust), Center Financial Group, LLC (a New Jersey financial services company), Center Advertising, Inc. (a New Jersey advertising company), Morris Property Company, LLC, (a New Jersey limited liability company), Volosin Holdings, LLC, (a New Jersey limited liability company), NJCB Spec-1, LLC (a New Jersey limited liability company), Port Jervis Holdings, LLC (a New Jersey limited liability company), BONJ Special Properties, LLC (a New Jersey limited liability company) and BoeFly, Inc. (a New Jersey financial technology company).</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; ">The Bank is a community-based, full-service New Jersey-chartered commercial bank that was founded in 2005. The Bank operates from its headquarters located at 301 Sylvan Avenue in the Borough of Englewood Cliffs, Bergen County, New Jersey and through its twenty-four other banking offices. Substantially all loans are secured with various types of collateral, including business assets, consumer assets and commercial/residential real estate. Each borrower’s ability to repay its loans is dependent on the conversion of assets, cash flows generated from the borrowers’ business, real estate rental and consumer wages. </p>
CY2021	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>
CY2021	cnob	Maximum Maturity Of Cash And Cash Equivalents MaximumMaturityOfCashAndCashEquivalents	P90D
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	5	Integer
CY2021	cnob	Non Accrual Contractual Due NonAccrualContractualDue	P90D
CY2021	cnob	Non Accrual Payment Status NonAccrualPaymentStatus	P90D
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateReconciliationDeductionsMedicarePrescriptionDrugBenefit	0.50	pure
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:Times New Roman, Times, serif; font-size:10pt; text-align:left; margin-top:11pt; margin-bottom:0pt; "> <span style="text-decoration:underline #000000; font-weight:bold; font-style:italic; ">Reclassifications</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; ">Certain reclassifications have been made in the consolidated financial statements and footnotes for 2020 and 2019 to conform to the classifications presented in 2021. Such reclassifications had no impact on net income or stockholders’ equity. </p>
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	944000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease		USD
CY2021Q1	cnob	Financing Receivable Allowance For Credit Losses Net FinancingReceivableAllowanceForCreditLossesNet	944000	USD
CY2021Q1	cnob	Allowance Of Credit Losses Unfunded Credit Commitments AllowanceOfCreditLossesUnfundedCreditCommitments	1981000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	2925000	USD
CY2021	cnob	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	128636000	USD
CY2020	cnob	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	71289000	USD
CY2019	cnob	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	73395000	USD
CY2021	cnob	Dividends Paid On Earnings Allocated To Participating Securities DividendsPaidOnEarningsAllocatedToParticipatingSecurities	-313000	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
CY2021	cnob	Income Attributable To Common Stock Value IncomeAttributableToCommonStockValue	128323000	USD
CY2020	cnob	Income Attributable To Common Stock Value IncomeAttributableToCommonStockValue	70933000	USD
CY2019	cnob	Income Attributable To Common Stock Value IncomeAttributableToCommonStockValue	73100000	USD
CY2021	cnob	Weighted Average Common Shares Outstanding Including Participating Securities WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities	39723000	shares
CY2020	cnob	Weighted Average Common Shares Outstanding Including Participating Securities WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities	39643000	shares
CY2019	cnob	Weighted Average Common Shares Outstanding Including Participating Securities WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities	35289000	shares
CY2021	cnob	Weighted Average Participating Securities WeightedAverageParticipatingSecurities	-97000	shares
CY2020	cnob	Weighted Average Participating Securities WeightedAverageParticipatingSecurities	-131000	shares
CY2019	cnob	Weighted Average Participating Securities WeightedAverageParticipatingSecurities	-84000	shares
CY2021	cnob	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	39626000	shares
CY2020	cnob	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	39512000	shares
CY2019	cnob	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	35205000	shares
CY2021	cnob	Incremental Shares From Assumed Conversions Of Options Performance Units And Restricted Shares IncrementalSharesFromAssumedConversionsOfOptionsPerformanceUnitsAndRestrictedShares	260000	shares
CY2020	cnob	Incremental Shares From Assumed Conversions Of Options Performance Units And Restricted Shares IncrementalSharesFromAssumedConversionsOfOptionsPerformanceUnitsAndRestrictedShares	132000	shares
CY2019	cnob	Incremental Shares From Assumed Conversions Of Options Performance Units And Restricted Shares IncrementalSharesFromAssumedConversionsOfOptionsPerformanceUnitsAndRestrictedShares	88000	shares
CY2021	cnob	Weighted Average Common And Equivalent Shares Outstanding WeightedAverageCommonAndEquivalentSharesOutstanding	39886000	shares
CY2020	cnob	Weighted Average Common And Equivalent Shares Outstanding WeightedAverageCommonAndEquivalentSharesOutstanding	39644000	shares
CY2019	cnob	Weighted Average Common And Equivalent Shares Outstanding WeightedAverageCommonAndEquivalentSharesOutstanding	35293000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.24
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.08
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.22
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.07
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	535182000	USD
CY2021Q4	cnob	Available For Sale Securities Gross Unrealized Gain Accumulated In Investments AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	4281000	USD
CY2021Q4	cnob	Available For Sale Securities Gross Unrealized Loss Accumulated In Investments AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments	4956000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	534507000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	477326000	USD
CY2020Q4	cnob	Available For Sale Securities Gross Unrealized Gain Accumulated In Investments AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	11015000	USD
CY2020Q4	cnob	Available For Sale Securities Gross Unrealized Loss Accumulated In Investments AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments	386000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	487955000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	71200000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	107600000	USD
CY2020	cnob	Description Of Holding Securities DescriptionOfHoldingSecurities	there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.
CY2021	cnob	Description Of Holding Securities DescriptionOfHoldingSecurities	there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	3045000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	3051000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	10203000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	10280000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	5136000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	5338000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	188678000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	189079000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	535182000	USD
CY2021Q4	cnob	Securities Available For Sale Net SecuritiesAvailableForSaleNet	534507000	USD
CY2021	cnob	Proceeds From Sale Of Investment Securities ProceedsFromSaleOfInvestmentSecurities	5185000	USD
CY2020	cnob	Proceeds From Sale Of Investment Securities ProceedsFromSaleOfInvestmentSecurities	19624000	USD
CY2019	cnob	Proceeds From Sale Of Investment Securities ProceedsFromSaleOfInvestmentSecurities	183728000	USD
CY2021	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	195000	USD
CY2020	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	29000	USD
CY2019	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	401000	USD
CY2021	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments		USD
CY2020	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments		USD
CY2019	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	681000	USD
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	195000	USD
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	29000	USD
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-280000	USD
CY2021	cnob	Tax Provision On Gain On Sale Of Investments TaxProvisionOnGainOnSaleOfInvestments	48000	USD
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
CY2021	cnob	Gain Loss On Sale Of Investments Net Of Tax GainLossOnSaleOfInvestmentsNetOfTax	147000	USD
CY2020	cnob	Gain Loss On Sale Of Investments Net Of Tax GainLossOnSaleOfInvestmentsNetOfTax	23000	USD
CY2019	cnob	Gain Loss On Sale Of Investments Net Of Tax GainLossOnSaleOfInvestmentsNetOfTax	-201000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	374015000	USD
CY2021Q4	cnob	Debt Securities Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments DebtSecuritiesAvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments	4956000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	338632000	USD
CY2021Q4	cnob	Debt Securities Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Accumulated In Investments DebtSecuritiesAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments	3795000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	35383000	USD
CY2021Q4	cnob	Debt Securities Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses Accumulated In Investments DebtSecuritiesAvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments	1161000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	40838000	USD
CY2020Q4	cnob	Debt Securities Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments DebtSecuritiesAvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments	386000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	38365000	USD
CY2020Q4	cnob	Debt Securities Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Accumulated In Investments DebtSecuritiesAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments	345000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2473000	USD
CY2020Q4	cnob	Debt Securities Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses Accumulated In Investments DebtSecuritiesAvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments	41000	USD
CY2021Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	1600000	USD
CY2020Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	1700000	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
CY2021Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	6838351000	USD
CY2020Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	6247681000	USD
CY2021Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	9729000	USD
CY2020Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	11374000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	6828622000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	6236307000	USD
CY2021Q4	cnob	Paycheck Protection Program Loans PaycheckProtectionProgramLoans	93100000	USD
CY2020Q4	cnob	Paycheck Protection Program Loans PaycheckProtectionProgramLoans	397500000	USD
CY2021Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	2500000000	USD
CY2020Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	2700000000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	250000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	4710000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	61700000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	61696000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2134132000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	637882000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	517603000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	574284000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	639093000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1103922000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1231435000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6838351000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	16217000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	58358000	USD
CY2021Q4	cnob	Allowance For Loan And Lease Losses Acquired With Deteriorated Credit Quality AllowanceForLoanAndLeaseLossesAcquiredWithDeterioratedCreditQuality	4198000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	78773000	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	101949000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	6722164000	USD
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	14238000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6838351000	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	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6247681000	USD
CY2021Q4	us-gaap	Securities Loaned Fair Value Of Collateral SecuritiesLoanedFairValueOfCollateral	109863000	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
CY2020Q4	cnob	Impaired Financing Receivable With No Related Allowance ImpairedFinancingReceivableWithNoRelatedAllowance		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
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	61700000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	84625000	USD
CY2021Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	6753726000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6838351000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	61696000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	98000000	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	6149681000	USD
CY2020Q4	cnob	Loans And Leases Receivable Gross LoansAndLeasesReceivableGross	6247681000	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
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	79226000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	6557000	USD
CY2020Q4	cnob	Loans And Leases Receivable Allowance Adjustment LoansAndLeasesReceivableAllowanceAdjustment	85783000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2397000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	405000	USD
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-5018000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	78773000	USD
CY2021Q1	cnob	Allowance For Loan Losses Included In Unallocated AllowanceForLoanLossesIncludedInUnallocated	6600000	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
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
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	79226000	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
CY2021	cnob	Non Accrual Contractual Due NonAccrualContractualDue	P90D
CY2021	us-gaap	Troubled Debt Restructuring Debtor Current Period Gain Loss On Transfer Of Assets Net Of Tax TroubledDebtRestructuringDebtorCurrentPeriodGainLossOnTransferOfAssetsNetOfTax	79500000	USD
CY2021	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	35900000	USD
CY2021	cnob	Loans Performing Under Restructured Terms LoansPerformingUnderRestructuredTerms	43600000	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
CY2021	cnob	Specific Allowance Of Troubled Debt Restructuring SpecificAllowanceOfTroubledDebtRestructuring	10400000	USD
CY2020	cnob	Specific Allowance Of Troubled Debt Restructuring SpecificAllowanceOfTroubledDebtRestructuring	0	USD
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	19	Integer
CY2021	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	40310000	USD
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	40310000	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
CY2021Q4	cnob	Number Of Deferred Loans NumberOfDeferredLoans	1	Loans
CY2021Q4	cnob	Deferred Loan DeferredLoan	500000	USD
CY2020Q4	cnob	Number Of Deferred Loans NumberOfDeferredLoans	113	Loans
CY2020Q4	cnob	Deferred Loan DeferredLoan	207100000	USD
CY2020Q4	cnob	Capital Lease In Premises And Equipment Net CapitalLeaseInPremisesAndEquipmentNet	1370000	USD
CY2020Q4	cnob	Time Deposits250000 Or More TimeDeposits250000OrMore	368300000	USD
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability		USD
CY2021	cnob	Day One Effect Of Cecl DayOneEffectOfCecl	2833000	USD
CY2021	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-482000	USD
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2351000	USD
CY2021	us-gaap	Provision For Other Losses ProvisionForOtherLosses	-5018000	USD
CY2021	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-482000	USD
CY2021	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-5500000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	69221000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	92181000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	40189000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	62073000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29032000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	30108000	USD
CY2021	us-gaap	Adjustment For Amortization AdjustmentForAmortization	3800000	USD
CY2020	us-gaap	Adjustment For Amortization AdjustmentForAmortization	4200000	USD
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	3100000	USD
CY2021Q4	cnob	Capital Lease In Premises And Equipment CapitalLeaseInPremisesAndEquipment	3423000	USD
CY2020Q4	cnob	Capital Lease In Premises And Equipment CapitalLeaseInPremisesAndEquipment	3408000	USD
CY2021Q4	cnob	Capital Lease In Premises And Equipment Excluding Accumulated Amortization CapitalLeaseInPremisesAndEquipmentExcludingAccumulatedAmortization	2224000	USD
CY2020Q4	cnob	Capital Lease In Premises And Equipment Excluding Accumulated Amortization CapitalLeaseInPremisesAndEquipmentExcludingAccumulatedAmortization	2038000	USD
CY2021Q4	cnob	Capital Lease In Premises And Equipment Net CapitalLeaseInPremisesAndEquipmentNet	1199000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	321000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	323000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	353000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	353000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	353000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	676000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2379000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	444000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y9M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.028	pure
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CY2021Q4	cnob	Total Risk Based Capital Ratio TotalRiskBasedCapitalRatio	0.0294	pure
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2797000	USD
CY2021	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.
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	13476000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	12533000	USD
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	284000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	364000	USD
CY2021	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1584000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1300000	USD
CY2021	cnob	Defined Benefit Plan Benefits Paid On Plan Assets DefinedBenefitPlanBenefitsPaidOnPlanAssets	700000	USD
CY2020	cnob	Defined Benefit Plan Benefits Paid On Plan Assets DefinedBenefitPlanBenefitsPaidOnPlanAssets	721000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	14644000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	13476000	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
CY2021	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	2436000	USD
CY2020	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	1973000	USD
CY2021	cnob	Defined Benefit Plan Employer Contribtution Of Plan Assets DefinedBenefitPlanEmployerContribtutionOfPlanAssets		USD
CY2020	cnob	Defined Benefit Plan Employer Contribtution Of Plan Assets DefinedBenefitPlanEmployerContribtutionOfPlanAssets		USD
CY2021	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	700000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	2392000	USD
CY2021	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation Increase Decrease For Settlement And Curtailment DefinedBenefitPlanAccumulatedBenefitObligationIncreaseDecreaseForSettlementAndCurtailment	14600000	USD
CY2020	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation Increase Decrease For Settlement And Curtailment DefinedBenefitPlanAccumulatedBenefitObligationIncreaseDecreaseForSettlementAndCurtailment	13500000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-4627000	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
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	284000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	364000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	453000	USD
CY2021	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	852000	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
CY2021	cnob	Defined Benefit Plan Amortization And Deferral Net DefinedBenefitPlanAmortizationAndDeferralNet	299000	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
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-269000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-119000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	114000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-299000	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
CY2021	cnob	Defined Benefit Plan Amounts Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Before Tax DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeBeforeTax	-568000	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
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0257	pure
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0217	pure
CY2021	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 Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease		pure
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0257	pure
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0217	pure
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0299	pure
CY2021	cnob	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Rate Of Return On Plan Assets DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermRateOfReturnOnPlanAssets	0.0550	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
CY2021	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 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
CY2020Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1	pure
CY2021Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1	pure
CY2021Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2020Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.055	pure
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	726000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	708000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	697000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	697000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	702000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	3682000	USD
CY2021	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%
CY2021	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1600000	USD
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1600000	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1300000	USD
CY2021	cnob	Deferred Compensation Expense Related To Supplemental Executive Retirement Plan DeferredCompensationExpenseRelatedToSupplementalExecutiveRetirementPlan	1000000.0	USD
CY2020	cnob	Deferred Compensation Expense Related To Supplemental Executive Retirement Plan DeferredCompensationExpenseRelatedToSupplementalExecutiveRetirementPlan	400000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4500000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2900000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2700000	USD
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	9.03
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross		shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	14247	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.51
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod		shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	23766	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.94
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P0Y7M6D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	541000000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	23766	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	9.94
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P0Y7M6D
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	541000000	USD
CY2021Q4	us-gaap	Amount Available For Dividend Distribution Without Affecting Capital Adequacy Requirements AmountAvailableForDividendDistributionWithoutAffectingCapitalAdequacyRequirements	256900000	USD
CY2020Q1	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	25000000.0	USD
CY2017Q2	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	25000000.0	USD
CY2020Q1	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	25000000.0	USD
CY2021Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	400000000	USD
CY2021	cnob	Interest Expense Of Interest Rate Cash Flow Hedge InterestExpenseOfInterestRateCashFlowHedge	1900000	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
CY2021Q4	cnob	Notional Amount NotionalAmount	475000000	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	3347000	USD
CY2020Q4	cnob	Notional Amount NotionalAmount	175000000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-2119000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	265536000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	265536000	USD
CY2021Q4	cnob	Available For Sale Securities Carrying Value AvailableForSaleSecuritiesCarryingValue	534507000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	534507000	USD
CY2021Q4	us-gaap	Restricted Investments RestrictedInvestments	27826000	USD
CY2021Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue		USD
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	13794000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	13794000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	6749849000	USD
CY2021Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	6800287000	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	3347000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	3347000	USD
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	34152000	USD
CY2021Q4	us-gaap	Receivables Fair Value Disclosure ReceivablesFairValueDisclosure	34152000	USD
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1617049000	USD
CY2021Q4	cnob	Non Interest Bearing Deposits Fair Value Disclosure NonInterestBearingDepositsFairValueDisclosure	1617049000	USD
CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	4715904000	USD
CY2021Q4	cnob	Interest Bearing Deposits Fair Value Disclosure InterestBearingDepositsFairValueDisclosure	4716358000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	468193000	USD
CY2021Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	469671000	USD
CY2021Q4	us-gaap	Subordinated Debt SubordinatedDebt	152951000	USD
CY2021Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	163995000	USD
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	2716000	USD
CY2021Q4	us-gaap	Accrued Liabilities Fair Value Disclosure AccruedLiabilitiesFairValueDisclosure	2716000	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 Debt Securities AvailableForSaleSecuritiesDebtSecurities	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
CY2021Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	79040000	USD
CY2021Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	77026000	USD
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	73051000	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
CY2021Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	72621000	USD
CY2021Q4	us-gaap	Interest Expense InterestExpense	8579000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	8781000	USD
CY2021Q2	us-gaap	Interest Expense InterestExpense	10042000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	11458000	USD
CY2021Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	70461000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	68245000	USD
CY2021Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63009000	USD
CY2021Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	61163000	USD
CY2021Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	815000	USD
CY2021Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1100000	USD
CY2021Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-1649000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-5766000	USD
CY2021Q4	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	3777000	USD
CY2021Q3	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	4016000	USD
CY2021Q2	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	4472000	USD
CY2021Q1	cnob	Total Other Income Net Of Securities Gains TotalOtherIncomeNetOfSecuritiesGains	3426000	USD
CY2021Q4	us-gaap	Other General Expense OtherGeneralExpense	28084000	USD
CY2021Q3	us-gaap	Other General Expense OtherGeneralExpense	28183000	USD
CY2021Q2	us-gaap	Other General Expense OtherGeneralExpense	26259000	USD
CY2021Q1	us-gaap	Other General Expense OtherGeneralExpense	26485000	USD
CY2021Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	45339000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42978000	USD
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42871000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	43870000	USD
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12301000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10881000	USD
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10652000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10871000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	33038000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	32097000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	32219000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	32999000	USD
CY2021Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1717000	USD
CY2021Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact		USD
CY2021Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact		USD
CY2021Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact		USD
CY2021Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	31321000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32097000	USD
CY2021Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32219000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32999000	USD
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.83
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.82
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	75588000	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
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	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	USD
CY2020Q1	us-gaap	Other General Expense OtherGeneralExpense	35058000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	33411000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32554000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	17348000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	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
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15

Files In Submission

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$CNOB
ConnectOne Bancorp, Inc. Stock $cnob

2022 Q1 Form 10-K Financial Statement

#000120677422000559 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNOB ConnectOne Bancorp, Inc. Stock $cnob

2022 Q1 Form 10-K Financial Statement

#000120677422000559 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNOB
ConnectOne Bancorp, Inc. Stock $cnob