XML 67 R55.htm IDEA: XBRL DOCUMENT
v3.19.2

Loans and the Allowance for Loan Losses (Details) - Loans held-for-sale - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items] |  |
Total carrying amount | $ 6,704 | $ 2,509
Commercial Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items] |  |
Total carrying amount | 5,399 | 2,509
Commercial Real Estate Portfolio Segment [Member] |  |
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items] |  |
Total carrying amount | $ 1,305 |

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

X
- Definition The face amount of loans that will be sold to other entities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansReceivableHeldForSaleAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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: |