Summary Of Significant Accounting Policies (Details)	3 Months Ended
Mar. 31, 2017 bank
Entity Location [Line Items]
Number of banking offices	11
Sussex County, New Jersey [Member]
Entity Location [Line Items]
Number of banking offices	8
Bergen County, New Jersey [Member]
Entity Location [Line Items]
Number of banking offices	1
Warren County, New Jersey [Member]
Entity Location [Line Items]
Number of banking offices	1
Queens County, New York [Member]
Entity Location [Line Items]
Number of banking offices	1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	dei_
Data Type:	xbrli:stringItemType
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Period Type:	duration