XML 88 R76.htm IDEA: XBRL DOCUMENT
v3.21.2

Subordinated Debentures (Details) - USD ($) $ in Millions | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jan. 31, 2018 | Jun. 30, 2015 | Jun. 30, 2021 | Dec. 31, 2020
Subordinated Debt from Trust [Member] |  |  |  |  |
Subordinated Debentures (Details) [Line Items] |  |  |  |  |
Value of subordinated debentures received by Trust |  |  |  | $ 5.0 |
Percentage Rate Added to Libor |  |  |  | 2.85% |
Floating interest rate on subordinated debentures |  |  |  | 3.04% |
Proceeds from Issuance of Debt |  |  |  | $ 5.2 |
Debt Instrument, Maturity Date |  |  |  | Jan. 23, 2034 |
Fixed-to-floating Rate Subordinated 2020 Notes [Member] |  |  |  |  |
Subordinated Debentures (Details) [Line Items] |  |  |  |  |
Proceeds from Issuance of Debt | $ 75.0 |  |  |  |
Debt Instrument, Maturity Date | Sep. 15, 2025 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.75% |  |  |  |
Debt Instrument, Description of Variable Rate Basis |  |  |  | Three-Month Term SOFR (as defined in the Second Supplemental Indenture), plus 560.5 basis points |
Fixed-to-floating Rate Subordinated 2018 Notes [Member] |  |  |  |  |
Subordinated Debentures (Details) [Line Items] |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 75.0 |  |  |
Debt Instrument, Maturity Date |  | Feb. 01, 2028 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.20% |  |  |
Debt Instrument, Description of Variable Rate Basis |  |  |  | three-month LIBOR rate plus 284 basis points |
Bank [Member] |  |  |  |  |
Subordinated Debentures (Details) [Line Items] |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 65.0 |  |  |
Fixed-to-floating Rate Subordinated Notes [Member] |  |  |  |  |
Subordinated Debentures (Details) [Line Items] |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 50.0 |  |
Debt Instrument, Maturity Date |  |  |  |  | Jul. 01, 2025
Debt Instrument, Description of Variable Rate Basis |  |  |  | three-month LIBOR rate plus 393 basis points |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 4.16%

X
- Definition Floating interest rate on subordinated debentures. + References No definition available. + Details
Name: | cnob_FloatingInterestRateOnSubordinatedDebentures
Namespace Prefix: | cnob_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage rate added to LIBOR. + References No definition available. + Details
Name: | cnob_PercentageRateAddedToLibor
Namespace Prefix: | cnob_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Value of subordinated debentures received by Trust. + References No definition available. + Details
Name: | cnob_ValueOfSubordinatedDebenturesReceived
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of reference rate used for variable rate of debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cnob_SubordinatedDebtFromTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cnob_FixedToFloatingRateSubordinated2020NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cnob_FixedToFloatingRateSubordinated2018NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cnob_BankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cnob_FixedToFloatingRateSubordinatedNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |