XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Securities Available-for-Sale (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) Integer | Jun. 30, 2017 USD ($) | Dec. 31, 2017 USD ($) Integer
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Number of Investment Securities Sold | Integer |  | 157 |  | 112
Available-for-sale Securities Pledged as Collateral | $ 165,900 | $ 165,900 |  | $ 157,800
Description of Holding Securities |  | there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity. |  | there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.
Loss on equity securities, net | $ 47 | $ 168 |  |

X
- Definition Description of holding securities. + References No definition available. + Details
Name: | cnob_DescriptionOfHoldingSecurities
Namespace Prefix: | cnob_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss on equity securities. + References No definition available. + Details
Name: | cnob_LossOnEquitySecuritiesNotHeldForTrading
Namespace Prefix: | cnob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of investment securities sold. + References No definition available. + Details
Name: | cnob_NumberOfInvestmentSecuritiesSold
Namespace Prefix: | cnob_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of restricted 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 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleRestricted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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