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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Revenues: |  |
License and collaborative fees | $ 964 | $ 399
Contract and other | 2,446 | 9,054
Total revenues | 3,410 | 9,453
Operating expenses: |  |
Research and development | 21,546 | 16,636
Selling, general and administrative | 5,254 | 4,124
Restructuring | 84 | 17
Total operating expenses | 26,884 | 20,777
Loss from operations | (23,474) | (11,324)
Other income (expense): |  |
Interest expense | (1,125) | (1,172)
Other (expense) income | (90) | 449
Revaluation of contingent warrant liabilities | 20,002 | (12,840)
Net loss | (4,687) | (24,887)
Basic net loss per share of common stock (in dollars per shares) | $ (0.04) | $ (0.30)
Diluted net loss per share of common stock - restated for the three months ended March 31, 2014 (in dollars per share) | $ (0.21) | $ (0.30)
Shares used in computing basic net loss per share of common stock (in shares) | 106,158 | 82,595
Shares used in computing diluted net loss per share of common stock - restated for the three months ended March 31, 2014 (in shares) | 115,524 | 82,595
Other comprehensive loss: |  |
Net loss | (4,687) | (24,887)
Net unrealized gains on available-for-sale securities | 7 | 3
Comprehensive loss | $ (4,680) | $ (24,884)

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