Derivative Financial Instruments (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 7,500,000		$ 34,000,000
Notional Amount of Interest Rate Derivative Instruments Not Designated as Hedging Instruments	12,100,000		53,600,000
Gain (Loss) on Interest Rate Fair Value Hedge Ineffectiveness	$ 34,000	$ 90,000