Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Investment in real estate, net:
Allowance for doubtful accounts receivable	$ 1,238	$ 431
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	30,706,527	30,682,215
Common stock, shares outstanding	30,706,527	30,682,215