Derivatives and Hedging Activity (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivative, Collateral, Obligation to Return Cash	$ 0		$ 0		$ 0
Derivatives And Hedging Activity (Textual) [Abstract]
Cash flow hedge ineffectiveness in earnings materiality	less than a  $1,000	less than a  $1,000	less than a  $1,000	less than a  $1,000
Estimated additional accumulated other comprehensive Income/(Loss) transferred to interest expense	5,600,000		5,600,000
Derivative instruments not designated as hedging instruments, gain (loss), net	(3,000)	(7,000)	(5,000)	291,000
Fair value of derivatives in a net liability position	8,000,000		8,000,000
Payment required to pay for contract termination	$ 8,000,000		$ 8,000,000