Annual report pursuant to Section 13 and 15(d)

Properties, net (Details 6)

v2.4.0.6
Properties, net (Details 6) (USD $)
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Operating properties, net
Sep. 30, 2012
Operating properties, net
Jun. 30, 2012
Operating properties, net
Mar. 31, 2012
Operating properties, net
Dec. 31, 2011
Operating properties, net
Sep. 30, 2011
Operating properties, net
Jun. 30, 2011
Operating properties, net
Mar. 31, 2011
Operating properties, net
Dec. 31, 2012
Operating properties, net
Dec. 31, 2011
Operating properties, net
Dec. 31, 2012
Non-operating Properties
Sep. 30, 2012
Non-operating Properties
Jun. 30, 2012
Non-operating Properties
Mar. 31, 2012
Non-operating Properties
Dec. 31, 2011
Non-operating Properties
Sep. 30, 2011
Non-operating Properties
Jun. 30, 2011
Non-operating Properties
Mar. 31, 2011
Non-operating Properties
Dec. 31, 2012
Non-operating Properties
Mar. 31, 2011
Fort Ritchie
Non-operating Properties
Properties                                                              
Non-cash impairment losses                                                             $ 27,700,000
Additional impairment losses on goodwill                                         803,000                    
Impairment losses recognized $ 2,140,000 $ 55,829,000 $ 2,354,000 $ 6,587,000 $ 151,021,000 $ 78,674,000 $ 44,605,000 $ 27,742,000 $ 66,910,000 $ 151,021,000 $ 0 $ 247,000 $ 55,829,000 $ 2,354,000 $ 11,833,000 $ 70,512,000 $ 39,481,000 $ 31,031,000 $ 0 $ 70,263,000   $ 1,893,000 $ 0 $ 0 $ (5,246,000) $ 80,509,000 $ 39,193,000 $ 13,574,000 $ 27,742,000 $ (3,353,000)