XML 46 R35.htm IDEA: XBRL DOCUMENT
v3.22.1

Investment Securities (Details) - Schedule of unrealized gains on investment securities - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Securities available-for-sale |  |
Securities, Amortized Cost | $ 543,330 | $ 535,182
Securities, Gross Unrealized Gains | 702 | 4,281
Securities, Gross Unrealized Losses | (32,002) | (4,956)
Securities, Fair Value | 512,030 | 534,507
Securities, Allowance for Investment Credit Losses |  |
Federal agency obligations [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 51,506 | 50,336
Securities, Gross Unrealized Gains | 46 | 649
Securities, Gross Unrealized Losses | (3,003) | (625)
Securities, Fair Value | 48,549 | 50,360
Securities, Allowance for Investment Credit Losses |  |
Residential Mortgage-Backed Securities [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 320,605 | 317,111
Securities, Gross Unrealized Gains | 160 | 1,868
Securities, Gross Unrealized Losses | (19,789) | (2,884)
Securities, Fair Value | 300,976 | 316,095
Securities, Allowance for Investment Credit Losses |  |
Commercial Mortgage-Backed Securities [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 18,713 | 10,814
Securities, Gross Unrealized Gains | 8 | 118
Securities, Gross Unrealized Losses | (1,313) | (463)
Securities, Fair Value | 17,408 | 10,469
Securities, Allowance for Investment Credit Losses |  |
US States and Political Subdivisions Debt Securities [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 144,474 | 145,045
Securities, Gross Unrealized Gains | 446 | 1,562
Securities, Gross Unrealized Losses | (7,869) | (982)
Securities, Fair Value | 137,051 | 145,625
Securities, Allowance for Investment Credit Losses |  |
Corporate bonds and notes [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 5,477 | 8,968
Securities, Gross Unrealized Gains | 35 | 81
Securities, Gross Unrealized Losses | (11) |
Securities, Fair Value | 5,501 | 9,049
Securities, Allowance for Investment Credit Losses |  |
Asset-Backed Securities [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 2,364 | 2,563
Securities, Gross Unrealized Gains | 7 | 3
Securities, Gross Unrealized Losses | (17) | (2)
Securities, Fair Value | 2,354 | 2,564
Securities, Allowance for Investment Credit Losses |  |
Other securities [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost | 191 | 195
Securities, Gross Unrealized Gains |  |
Securities, Gross Unrealized Losses |  |
Securities, Fair Value | 191 | 195
Securities, Allowance for Investment Credit Losses |  |
Certificates of Deposit [Member] |  |
Securities available-for-sale |  |
Securities, Amortized Cost |  | 150
Securities, Gross Unrealized Gains |  |
Securities, Gross Unrealized Losses |  |
Securities, Fair Value |  | 150
Securities, Allowance for Investment Credit Losses |  |

X
- Definition Securities, Allowance for Investment Credit Losses. + References No definition available. + Details
Name: | cnob_AvailableForSaleSecuritiesAllowanceForInvestmentCreditLosses
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Available for sale securities gross unrealized gain accumulated in investments. + References No definition available. + Details
Name: | cnob_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available for sale securities gross unrealized loss accumulated in investments. + References No definition available. + Details
Name: | cnob_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cnob_FederalAgencyObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cnob_CorporateBondsAndNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=cnob_OtherSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |