Quarterly report pursuant to Section 13 or 15(d)

STATEMENTS OF COMPREHENSIVE LOSS

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STATEMENTS OF COMPREHENSIVE LOSS (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
STATEMENTS OF COMPREHENSIVE LOSS        
Net loss $ (25,391) $ (22,768) $ (47,694) $ (48,342)
Other comprehensive income:        
Unrealized (loss) gain on available-for-sale securities 4 (61) (5) (65)
Comprehensive loss $ (25,387) $ (22,829) $ (47,699) $ (48,407)