Acquisition of New Jersey Community Bank (Summary of Loans Acquired at Fair Value) (Details) - New Jersey Community Bank [Member] $ in Thousands	Apr. 11, 2018 USD ($)
Business Acquisition [Line Items]
Acquired loans receivable	$ 75,144
Consumer Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	6,409
Construction [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	798
Commercial Real Estate [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	59,064
Commercial Business [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	1,302
Residential Real Estate [Member] | Residential Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	7,572
Financial Asset Acquired and No Credit Deterioration [Member]
Business Acquisition [Line Items]
Acquired loans receivable	74,263
Financial Asset Acquired and No Credit Deterioration [Member] | Consumer Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	6,409
Financial Asset Acquired and No Credit Deterioration [Member] | Construction [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	798
Financial Asset Acquired and No Credit Deterioration [Member] | Commercial Real Estate [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	58,191
Financial Asset Acquired and No Credit Deterioration [Member] | Commercial Business [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	1,293
Financial Asset Acquired and No Credit Deterioration [Member] | Residential Real Estate [Member] | Residential Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	7,572
Financial Asset Acquired with Credit Deterioration [Member]
Business Acquisition [Line Items]
Acquired loans receivable	881
Financial Asset Acquired with Credit Deterioration [Member] | Construction [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	0
Financial Asset Acquired with Credit Deterioration [Member] | Commercial Real Estate [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	873
Financial Asset Acquired with Credit Deterioration [Member] | Commercial Business [Member] | Commercial Portfolio Segment [Member]
Business Acquisition [Line Items]
Acquired loans receivable	$ 8