Derivatives and Hedging Activities (Textual) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative
Preferred Stock, Shares Issued	867,846
Preferred Stock, Redemption Price Per Share	$ 50.00
Embedded Derivative, Fair Value of Embedded Derivative Asset	$ 10,800,000
Other Credit Enhancements
Derivative
Credit risk related contingent features termination value	7,500,000
Termination
Derivative
Fair value of credit risk derivatives	7,600,000
Net liability position
Derivative
Credit risk related contingent features termination value	7,500,000
Interest Expense
Derivative
Change in fair value of derivatives, ineffective portion	54,000	$ 100,000	$ 157,000
Designated as Hedging Instrument | Interest Expense
Derivative
Change in fair value of interest rate derivatives included in AOCI and expected to be reclassified in the next 12 months	1,200,000
Other Assets
Derivative
Interest Rate Cash Flow Hedge Asset at Fair Value	2,364,000	6,000
Interest Rate Swap
Derivative
Fair market value of interest rate swaps	7,562,000	10,358,000
Parent Company [Member]
Derivative
Fair market value of interest rate swaps	7,562,000	10,358,000
Interest Rate Cash Flow Hedge Asset at Fair Value	$ 2,364,000,000	$ 6,000
Preferred Stock, Shares Issued	867,846	0