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Stock-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-Based Compensation Expense | The following table shows total stock-based compensation expense included in the condensed consolidated statement of operations for the three months ended March 31, 2014 and 2013 (in thousands):
|  | Three months ended March 31, |
|  | 2014 |  |  | 2013 |
Costs and expenses: |  |  |  |  |  |  |  |
Research and development |  | $ | 1,073 |  |  | $ | 685 |
General and administrative |  |  | 834 |  |  |  | 644 |
Total stock-based compensation expense |  | $ | 1,907 |  |  | $ | 1,329 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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