Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements Of Comprehensive Income [Abstract]
Net Income	$ 58,586	$ 18,085	$ 52,073	$ 10,409
Other Comprehensive (Loss) Income
Change in Fair Value of Derivative Instruments	(1)	2,519	256	2,971
Less: Reclassification Adjustment for Change in Fair Value of Derivative Instruments Included in Net Income	(418)	(312)	(774)	(608)
Other Comprehensive (Loss) Income	(419)	2,207	(518)	2,363
Comprehensive Income	58,167	20,292	51,555	12,772
Less: Comprehensive (Income) Loss Attributable to Noncontrolling Interests	(1,655)	(210)	(1,148)	463
Less: Preferred Distributions	(3,589)	(3,589)	(7,178)	(7,433)
Less: Extinguishment of Issuance Costs Upon Redemption of Series A Preferred Shares				(2,250)
Comprehensive Income Attributable to Common Shareholders	$ 52,923	$ 16,493	$ 43,229	$ 3,552