XML 49 R38.htm IDEA: XBRL DOCUMENT v3.22.1

Derivatives (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 13, 2017	Mar. 31, 2022	Mar. 31, 2021
Derivatives (Details) [Line Items]
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	$ 25.0	$ 400.0
Federal Home Loan Bank advance Fixed-rates of interest	1.93%
Net interest income on swaps - Borrowings		$ 0.5	$ 0.6
Minimum [Member]
Derivatives (Details) [Line Items]
Federal Home Loan Bank advance Fixed-rates of interest		0.631%
Expiration date		2025-12
Maximum [Member]
Derivatives (Details) [Line Items]
Federal Home Loan Bank advance Fixed-rates of interest		1.23%
Expiration date		2028-03

X

- References

No definition available.

+ Details

Name:	cnob_DerivativesDetailsLineItems
Namespace Prefix:	cnob_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	cnob_ExpirationDates
Namespace Prefix:	cnob_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Federal Home Loan Bank advance Fixed-rates of interest.

+ References

No definition available.

+ Details

Name:	cnob_FederalHomeLoanBankAdvanceFixedratesOfInterest
Namespace Prefix:	cnob_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Interest expense on derivatives.

+ References

No definition available.

+ Details

Name:	cnob_InterestExpenseOfInterestRateCashFlowHedge
Namespace Prefix:	cnob_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeLiabilityNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: