XML 15 R48.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Loans and the Allowance for Loan and Lease Losses (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2015 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Loans and the Allowance for Loan and Lease Losses (Details) [Line Items] |  |  |  |
Number of Segments of Loans and Leases |  | 5 |  |
Non Accrual Contractual Due |  | 90 days |  |
Threshold to Determine Impaired Loans |  | $ 250,000 |  |
Period Considered to Calculate Actual Loss |  | 3 years |  |
Loans Pledged as Collateral | $ 1,600,000,000 | $ 1,600,000,000 |  | $ 1,000,000,000
Financing Receivable, Collectively Evaluated for Impairment | 2,856,519,000 | 2,856,519,000 |  | 2,516,251,000
Commitments to Lend Additional Funds |  | 0 |  |
Financing Receivable, Modifications, Recorded Investment | 77,100,000 | 77,100,000 |  | 2,800,000
Loans Modified In Troubled Debt Restructuring On Non Accrual Status |  | 1,100,000 |  | 1,000,000
Allocations Related to Troubled Debt Restructuring | 2.0 | 2.0 | $ 0 |
Allowance for Loan and Lease Losses Period Increase Decrease Due to Trouble Debt Restructuring | 2.0 | 2.0 |  |
Valuation per Medallion Amount | 814,000 | $ 814,000 |  |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum |  | 3.00% |  |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum |  | 3.25% |  |
Debt Instrument, Interest Rate, Increase (Decrease) |  | 3.75% |  |
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down |  | $ 0 | $ 333,000 |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts |  | 0 | 0 |
Acquired Loans [Member] |  |  |  |
Loans and the Allowance for Loan and Lease Losses (Details) [Line Items] |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | $ 900,000,000 | $ 900,000,000 |  | $ 1,200,000,000
Minimum [Member] |  |  |  |
Loans and the Allowance for Loan and Lease Losses (Details) [Line Items] |  |  |  |
Amortization Period For Interest |  | 25 years |  |
Maximum [Member] |  |  |  |
Loans and the Allowance for Loan and Lease Losses (Details) [Line Items] |  |  |  |
Amortization Period For Interest |  | 30 years |  |

X
- Definition Allocations related to troubled debt restructuring. + References No definition available. + Details
Name: | cnob_AllocationsRelatedToTroubledDebtRestructuring
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Allowance for loan and lease losses period increase decrease due to trouble debt restructuring. + References No definition available. + Details
Name: | cnob_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseDueToTroubleDebtRestructuring
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortization period for interest. + References No definition available. + Details
Name: | cnob_AmortizationPeriodForInterest
Namespace Prefix: | cnob_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Commitments to lend additional funds. + References No definition available. + Details
Name: | cnob_CommitmentsToLendAdditionalFunds
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loans modified in troubled debt restructuring on non-accrual status. + References No definition available. + Details
Name: | cnob_LoansModifiedInTroubledDebtRestructuringOnNonAccrualStatus
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | cnob_LoansandtheAllowanceforLoanandLeaseLossesDetailsLineItems
Namespace Prefix: | cnob_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Non accrual contractual due. + References No definition available. + Details
Name: | cnob_NonAccrualContractualDue
Namespace Prefix: | cnob_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments of loans and leases. + References No definition available. + Details
Name: | cnob_NumberOfSegmentsOfLoansAndLeases
Namespace Prefix: | cnob_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period considered to calculate actual loss. + References No definition available. + Details
Name: | cnob_PeriodConsideredToCalculateActualLoss
Namespace Prefix: | cnob_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold to determine impaired loans. + References No definition available. + Details
Name: | cnob_ThresholdtoDetermineImpairedLoans
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Valuation per medallion amount. + References No definition available. + Details
Name: | cnob_ValuationPerMedallionAmount
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Incremental percentage increase (decrease) in the stated rate on a debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5086-111524 + Details
Name: | us-gaap_LoansPledgedAsCollateral
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cnob_AcquiredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |