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Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) [Abstract] |  |  |  |
Product revenue | $ 0 | $ 106 | $ 81 | $ 106
Other revenues | 0 | 0 | 300 | 0
Total revenue | 0 | 106 | 381 | 106
Costs of goods sold | (332) | 0 | (363) | 0
Gross profit (loss) | (332) | 106 | 18 | 106
Operating expenses |  |  |  |
Selling, general and administrative | 6,263 | 7,218 | 12,346 | 14,643
Research and development | 3,992 | 8,204 | 8,462 | 15,335
Total operating expenses | 10,255 | 15,422 | 20,808 | 29,978
Operating loss | (10,587) | (15,316) | (20,790) | (29,872)
Change in fair value of warrant liability, net | 5,115 | 917 | 2,842 | 579
Interest income | 5 | 4 | 15 | 7
Other expense and interest expense | (15) | (117) | (395) | (115)
Net loss | (5,482) | (14,512) | (18,328) | (29,401)
Common share data: |  |  |  |
Basic and diluted loss per share (in dollars per share) | $ (0.06) | $ (0.26) | $ (0.20) | $ (0.57)
Weighted average number of basic and diluted common shares outstanding (in shares) | 96,380,562 | 54,847,807 | 90,934,084 | 51,582,458
Other comprehensive income (loss): |  |  |  |
Foreign currency translation adjustments | 6 | 0 | 369 | 0
Comprehensive loss | $ (5,476) | $ (14,512) | $ (17,959) | $ (29,401)

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