Accumulated Other Comprehensive Loss (Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss, Net of Noncontrolling Interests) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			$ (2,580)	$ (1,161)
Other comprehensive income (loss) before reclassification			(9,320)	(2,437)
Amount of loss reclassified from accumulated other comprehensive loss to net income (effective portion)			2,851	1,601
Other comprehensive (loss) income attributable to common stockholders	$ (2,606)	$ 1,136	(6,469)	(836)
Ending Balance	(9,049)	(1,997)	(9,049)	(1,997)
Unrealized Loss On Derivative Instruments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(2,100)	(1,161)
Other comprehensive income (loss) before reclassification			(9,320)	(2,437)
Amount of loss reclassified from accumulated other comprehensive loss to net income (effective portion)			2,851	1,601
Other comprehensive (loss) income attributable to common stockholders			(6,469)	(836)
Ending Balance	$ (8,569)	$ (1,997)	$ (8,569)	$ (1,997)