Subsequent Event (Details) - Bancorp of New Jersey, Inc. merged with ConnectOne Bank [Member] $ / shares in Units, $ in Billions	Jan. 02, 2019 USD ($) $ / shares
Subsequent Event [Line Items]
Loans acquired \| $	$ 0.8
Deposits acquired \| $	$ 0.8
Share price received by shareholders of BNJ common stock \| $ / shares	$ 16.25
Percentage of BNJ common stock acquired converted into cash	20.00%
Percentage of BNJ common shares be converted into shares of ConnectOne common stock	80.00%
Share of CNOB common stock [Member]
Subsequent Event [Line Items]
Share price received by shareholders of BNJ common stock \| $ / shares	$ 0.780

The amount of deposit liabilities assumed (as defined) which have been recognized as of the acquisition date.

No definition available.

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- Definition

The amount of loans acquired (as defined) recognized as of the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Percentage of BNJ common shares be converted into shares of ConnectOne common stock.

+ References

No definition available.

+ Details

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- Definition

Percentage of BNJ common stock acquired converted into cash.

+ References

No definition available.

+ Details

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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