XML 60 R48.htm IDEA: XBRL DOCUMENT
v3.21.2

Loans and the Allowance for Credit Losses (Details) - Loans receivable on nonaccrual status - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 65,959 | $ 61,696
Nonaccrual Loans with an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 39,661 |
Nonaccrual Loans without an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 26,298 |
Commercial Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 30,479 | 33,019
Commercial Portfolio Segment [Member] | Nonaccrual Loans with an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 27,993 |
Commercial Portfolio Segment [Member] | Nonaccrual Loans without an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 2,486 |
Commercial Real Estate Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 28,578 | 10,111
Commercial Real Estate Portfolio Segment [Member] | Nonaccrual Loans with an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 11,668 |
Commercial Real Estate Portfolio Segment [Member] | Nonaccrual Loans without an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 16,910 |
Commercial Construction Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 3,336 | 14,015
Commercial Construction Portfolio Segment [Member] | Nonaccrual Loans with an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  |
Commercial Construction Portfolio Segment [Member] | Nonaccrual Loans without an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 3,336 |
Residential Real Estate Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 3,566 | 4,551
Residential Real Estate Portfolio Segment [Member] | Nonaccrual Loans with an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  |
Residential Real Estate Portfolio Segment [Member] | Nonaccrual Loans without an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status | 3,566 |
Consumer Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  |
Consumer Portfolio Segment [Member] | Nonaccrual Loans with an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  |
Consumer Portfolio Segment [Member] | Nonaccrual Loans without an ACL [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Loans receivable on nonaccrual status [Line Items] |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  |

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

X
- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditLossStatusAxis=cnob_NonaccrualLoansWithAclMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditLossStatusAxis=cnob_NonaccrualLoansWithoutAclMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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