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Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Condensed Consolidated Statements of Comprehensive Loss [Abstract]    
Net loss attributable to common shareholders $ (34,635) $ (9,171)
Other comprehensive income (loss), net:    
Change in foreign currency translation 323 1,390
Available for sale investments:    
Change in other net unrealized gains, net 414 109
Comprehensive loss $ (33,898) $ (7,672)