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Condensed Consolidated Statements of Comprehensive Loss (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Net loss $ (20,825) $ (16,505)
Other comprehensive income (loss):    
Unrealized loss on marketable securities available-for-sale (8)  
Cumulative translation adjustment (347) 429
Total other comprehensive income (loss) (355) 429
Total comprehensive loss $ (21,180) $ (16,076)