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Common Stock (Details 1) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Summary of share-based compensation expense | |||
| Stock-based compensation | $ 2,175 | $ 1,188 | $ 642 |
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Research and development [Member]
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| Summary of share-based compensation expense | |||
| Stock-based compensation | 899 | 509 | 331 |
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General and administrative [Member]
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| Summary of share-based compensation expense | |||
| Stock-based compensation | $ 1,276 | $ 679 | $ 311 |
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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