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Subsequent Event - Completion of Merger (Details) | 6 Months Ended
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Jun. 30, 2014
Subsequent Events [Abstract] |
Common Stock Conversion Ratio Shares | 2.6

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- Definition Common stock conversion ratio shares. + References No definition available. + Details
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Namespace Prefix: | cnob_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration