Equity and Capital (Tables)

6 Months Ended

Jun. 30, 2012

Equity and Capital [Abstract]

Preferred Stock Transaction [Table Text Block]

Parent Company	Financial Statement Line Item
Consolidated Statements of Operations	Preferred stock dividends
Consolidated Statements of Changes in Equity	Redemption of preferred stock
Operating Partnership
Consolidated Statements of Operations	Preferred unit distributions
Consolidated Statements of Changes in Capital	Preferred units issued as a result of preferred stock issued by Parent Company, net of redemptions and issuance costs

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents changes in the balances of each component of accumulated other comprehensive loss for the six months ended June 30, 2012 (in thousands):

		Loss on Settlement of Derivative Instruments		Fair Value of Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
Beginning balance at December 31, 2011	$	(71,438	)	9		(71,429	)
Current period other comprehensive income (loss)		4,723		(25	)	4,698
Ending balance at June 30, 2012	$	(66,715	)	(16	)	(66,731	)