Derivatives and Hedging Activities (Textual) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Net Liability Position, Aggregate Fair Value	$ 12,200,000		$ 12,200,000		$ 12,800,000
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge			5 years
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 109,000
Gain (Loss) on Sales of Loans, Net	977,000	$ 1,300,000	2,000,000	$ 2,200,000
Exposure to Institutional Counterparties	4,000,000		4,000,000		4,700,000
Amortization Of Deferred Hedge Gains Losses	61,000	61,000	122,000	122,000
Notional amount of fair value hedged derivative	0		0
Customer related positions	15,700,000		15,700,000		16,100,000
Change in Fair Value on Loans Held for Sale	153,000	$ (41,000)	6,000	$ 13,000
Derivative, Notional Amount	$ 75,000,000		$ 75,000,000		$ 75,000,000