Partners Equity of The Operating Partnership (Tables)

12 Months Ended

Dec. 31, 2011

Equity [Abstract]

Earnings per Common Partnership Unit

	Years ended December 31,
	2011						2010						2009
	Basic			Diluted			Basic			Diluted			Basic			Diluted
Numerator
Income (loss) from continuing operations	$	(13,232	)	$	(13,232	)	$	(31,276	)	$	(31,276	)	$	3,588		$	3,588
Net (loss) income from continuing operations attributable to non-controlling interests	—			—			—			—			(30		)	(30		)
Amount allocable to unvested restricted unitholders	(505		)	(505		)	(512		)	(512		)	(279		)	(279		)
Preferred share dividends	(7,992		)	(7,992		)	(7,992		)	(7,992		)	(7,992		)	(7,992		)
Loss from continuing operations available to common unitholders	(21,729		)	(21,729		)	(39,780		)	(39,780		)	(4,713		)	(4,713		)
Discontinued operations attributable to common unitholders	8,517			8,517			13,670			13,670			4,501			4,501
Net loss available to common unitholders	$	(13,212	)	$	(13,212	)	$	(26,110	)	$	(26,110	)	$	(212	)	$	(212	)
Denominator
Weighted-average units outstanding	145,118,841			145,118,841			137,454,796			137,454,796			114,712,869			114,712,869
Contingent securities/Stock based compensation	—			—			—			—			—			1,353,246
Total weighted-average units outstanding	145,118,841			145,118,841			137,454,796			137,454,796			114,712,869			116,066,115
Earnings (loss) per Common Share:
Loss from continuing operations attributable to common unitholders	$	(0.15	)	$	(0.15	)	$	(0.29	)	$	(0.29	)	$	(0.04	)	$	(0.04	)
Discontinued operations attributable to common unitholders	0.06			0.06			0.10			0.10			0.04			0.04
Net loss attributable to common unitholders	$	(0.09	)	$	(0.09	)	$	(0.19	)	$	(0.19	)	$	—		$	—