v2.3.0.11

Consolidated Balance Sheets (unaudited) Parenthetical (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Series A Cumulative Redeemable Preferred units of the Operating Partnership
Temporary Equity, dividend rate percent	6.25%	6.25%
Common stock:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	490,000,000	490,000,000
Common stock, shares outstanding	33,570,842	22,436,950
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Series B Cumulative Redeemable Preferred Stock, Par Value Per Share	$ 0.01	$ 0.01
Series B Cumulative Redeemable Preferred Stock, Shares Authorized	10,000,000	10,000,000
Series B Cumulative Redeemable Preferred Stock, Shares Outstanding	3,500,000	3,500,000
Series B Cumulative Redeemable Preferred Stock, Dividend Rate Percentage	8.375%	8.375%
Series B Cumulative Redeemable Preferred Stock, Liquidation Preference Per Share	$ 25	$ 25

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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