CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Allowance on deferred rent receivable	$ 0	$ 25,630
Allowance on notes, mortgages and accounts receivable	$ 25,371	$ 9,480
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	33,396,720	33,394,395