v2.4.0.6
Business Combinations (Details 2) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Schedule of pro forma information for business combinations    
Total revenues $ 1,981,579 $ 1,898,083
Net loss attributable to common shares $ (70,988) $ (1,374,283)
Net loss per share attributable to common shares - basic $ (0.15) $ (3.24)
Net loss per share attributable to Common Shares - diluted $ (0.15) $ (3.24)