Derivative Instruments Gain (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Loss) (Effective Portion)	$ (992)	$ 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)	(1,893)	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)	(992)	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)	$ (1,893)	$ 0