Derivative Instruments and Hedging Activity (Derivative Instruments Gain (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Loss) (Effective Portion)	$ (3,006)	$ 0
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion )	0	0
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivative (Effective Portion)	(5,305)	(2,935)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Loss) (Effective Portion)	(3,006)	0
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion )	0	0
Interest Rate Cap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on Derivative (Effective Portion)	$ (5,305)	$ (2,935)