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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Net loss $ (8,296) $ (8,763) $ (20,190) $ (18,537)
Other comprehensive income:        
Net unrealized gain on investments 81   83  
Total other comprehensive income 81   83  
Comprehensive loss $ (8,215) $ (8,763) $ (20,107) $ (18,537)