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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Income Statement [Abstract] |  |
Product revenue | $ 6,782 | $ 4,338
Contract revenue | 1,583 | 1,279
Total revenue | 8,365 | 5,617
Cost of product revenue | 6,085 | 11,640
Cost of contract revenue | 839 | 1,425
Total cost of revenue | 6,924 | 13,065
Gross margin | 1,441 | (7,448)
Research and development expense | 13,135 | 15,279
Sales, marketing, general and administrative expense | 11,252 | 13,314
Gain on disposal of fixed assets | (79) | (11)
Total operating expenses | 24,308 | 28,582
Loss from operations | (22,867) | (36,030)
Other income, net | 174 | 222
Net loss | $ (22,693) | $ (35,808)
Net loss per share - basic and diluted | $ (1.05) | $ (2.57)
Weighted-average shares outstanding - basic and diluted | 21,595 | 13,919

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