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Selected Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2013
Selected Quarterly Financial Data |
|  | Year Ended December 31, 2013 |
|  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
Revenues |  | $ | 2,085 |  |  | $ | 3,392 |  |  | $ | 2,927 |  |  | $ | 2,847 |
Net loss |  | $ | (20,825 | ) |  | $ | (17,164 | ) |  | $ | (15,675 | ) |  | $ | (13,056 | )
Net loss allocable to common stockholders |  | $ | (20,825 | ) |  | $ | (17,164 | ) |  | $ | (15,675 | ) |  | $ | (21,525 | )
Basic and diluted net loss per share allocable to common stockholders |  | $ | (0.11 | ) |  | $ | (0.09 | ) |  | $ | (0.09 | ) |  | $ | (0.09 | )
Shares used to compute basic and diluted net loss per share allocable to common stockholders |  |  | 182,847 |  |  |  | 182,913 |  |  |  | 183,022 |  |  |  | 235,879 |
|  | Year Ended December 31, 2012 |
|  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
Revenues |  | $ | 2,350 |  |  | $ | 2,684 |  |  | $ | 2,874 |  |  | $ | 1,806 |
Net loss |  | $ | (16,505 | ) |  | $ | (15,110 | ) |  | $ | (17,791 | ) |  | $ | (20,543 | )
Net loss allocable to common stockholders |  | $ | (16,505 | ) |  | $ | (15,110 | ) |  | $ | (17,791 | ) |  | $ | (20,543 | )
Basic and diluted net loss per share allocable to common stockholders |  | $ | (0.11 | ) |  | $ | (0.09 | ) |  | $ | (0.10 | ) |  | $ | (0.11 | )
Shares used to compute basic and diluted net loss per share allocable to common stockholders |  |  | 155,431 |  |  |  | 167,697 |  |  |  | 177,870 |  |  |  | 180,685 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=25249566&loc=d3e1280-108306 + Details
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Balance Type: | na
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