Derivative Instruments Gain (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Loss) (Effective Portion)	$ 0	$ 0	$ 0	$ 0
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion )	0	0	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)	(2,935)	0	(2,935)	0
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)	0	0	0	0
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion )	0	0	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)	$ (2,935)	$ 0	$ (2,935)	$ 0