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Loss Per Share of Class A and Class B Common Stock Basic and Diluted Earnings Per Share, 2013, 2012 and 2011 (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Earnings Per Share, Basic [Abstract]        
Net loss $ (20,922) $ (5,551) $ (56,285) $ (8,793)
Net income attributable to noncontrolling interests 1,953 2,023 4,385 2,773
Basic, weighted average number of shares outstanding 675,538,392 662,361,436 678,958,541 660,580,927
Basic, net (loss) earnings per share $ (0.03) $ (0.01) $ (0.09) $ (0.02)
Earnings Per Share, Diluted [Abstract]        
Basic, weighted average number of shares outstanding 675,538,392 662,361,436 678,958,541 660,580,927
Diluted, weighted average number of shares outstanding 675,538,392 662,361,436 678,958,541 660,580,927
Diluted, net (loss) earnings per share $ (0.03) $ (0.01) $ (0.09) $ (0.02)
Common Class A [Member]
        
Earnings Per Share, Basic [Abstract]        
Net loss (20,847) (5,530) (56,085) (8,761)
Net income attributable to noncontrolling interests 1,946 2,016 4,369 2,763
Net (loss) income attributable to common stockholders (22,793) (7,546) (60,454) (11,524)
Basic, weighted average number of shares outstanding 673,138,416 659,961,460 676,558,565 658,180,951
Basic, net (loss) earnings per share $ (0.03) $ (0.01) $ (0.09) $ (0.02)
Earnings Per Share, Diluted [Abstract]        
Net Income (Loss) Available to Common Stockholders, Diluted (22,793) (7,546) (60,454) (11,524)
Reallocation of net income attributable to common stockholders as a result of conversion of Class B 0 [1] 0 [1] 0 [1] 0 [1]
Allocation of net income attributable to common stockholders (22,793) (7,546) (60,454) (11,524)
Basic, weighted average number of shares outstanding 673,138,416 659,961,460 676,558,565 658,180,951
Conversion of Class B 0 [1] 0 [1] 0 [1] 0 [1]
Employee stock options 0 [1] 0 [1] 0 [1] 0 [1]
Restricted shares and RSUs 0 [1] 0 [1] 0 [1] 0 [1]
Diluted, weighted average number of shares outstanding 673,138,416 [1] 659,961,460 [1] 676,558,565 [1] 658,180,951 [1]
Diluted, net (loss) earnings per share $ (0.03) $ (0.01) $ (0.09) $ (0.02)
Common Class B [Member]
        
Earnings Per Share, Basic [Abstract]        
Net loss (75) (21) (200) (32)
Net income attributable to noncontrolling interests 7 7 16 10
Net (loss) income attributable to common stockholders (82) (28) (216) (42)
Basic, weighted average number of shares outstanding 2,399,976 2,399,976 2,399,976 2,399,976
Basic, net (loss) earnings per share $ (0.03) $ (0.01) $ (0.09) $ (0.02)
Earnings Per Share, Diluted [Abstract]        
Net Income (Loss) Available to Common Stockholders, Diluted (82) (28) (216) (42)
Reallocation of net income attributable to common stockholders as a result of conversion of Class B 0 [1] 0 [1] 0 [1] 0 [1]
Allocation of net income attributable to common stockholders $ (82) $ (28) $ (216) $ (42)
Basic, weighted average number of shares outstanding 2,399,976 2,399,976 2,399,976 2,399,976
Conversion of Class B 0 [1] 0 [1] 0 [1] 0 [1]
Employee stock options 0 [1] 0 [1] 0 [1] 0 [1]
Restricted shares and RSUs 0 [1] 0 [1] 0 [1] 0 [1]
Diluted, weighted average number of shares outstanding 2,399,976 [1] 2,399,976 [1] 2,399,976 [1] 2,399,976 [1]
Diluted, net (loss) earnings per share $ (0.03) $ (0.01) $ (0.09) $ (0.02)
[1] Conversion of Class B shares into Class A shares and outstanding equity awards have not been reflected in the diluted loss per share calculation for the three and six months ended June 30, 2014 and 2013 because the effect would be antidilutive.