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Stock Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Allocated Stock-based Compensation Expense | The following table summarizes the components of stock-based compensation expense in the condensed consolidated statements of comprehensive loss for the three and nine months ended September 30, 2015 and 2014, respectively (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Research and development | $ | 83 |  |  | $ | 92 |  |  | $ | 253 |  |  | $ | 438 |
General and administrative | 492 |  |  | 990 |  |  | 1,081 |  |  | 3,440 |
Total stock-based compensation from continuing operations | $ | 575 |  |  | $ | 1,082 |  |  | $ | 1,334 |  |  | $ | 3,878 |
Stock based compensation from discontinued operations | $ | 275 |  |  | $ | 217 |  |  | $ | 788 |  |  | $ | 557 |
Assumptions for Option Grants Issued | The company uses the Black-Scholes option-pricing model and the following weighted-average assumptions to determine the fair value of all its stock options granted:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Risk free interest rate | — | % |  | 2.02 | % |  | 1.50 | % |  | 2.02 | %
Volatility | — | % |  | 79.10 | % |  | 74.20 | % |  | 79.47 | %
Expected lives (years) | 0.00 |  |  | 6.12 |  |  | 6.09 |  |  | 6.15 |
Expected dividend yield | — | % |  | — | % |  | — | % |  | — | %
Stock Option Activity | The following table summarizes option activity of the company:
| Total Number of Shares (In Thousands) |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value (In Thousands)
Outstanding at January 1, 2015 | 8,590 |  |  | $ | 3.25 |  |  |  |
Granted | 3,682 |  |  | 1.73 |  |  |  |
Exercised | (39 | ) |  | 0.79 |  |  | $ | 37 |
Cancelled | (1,045 | ) |  | 2.44 |  |  | $ | 21 |
Outstanding at September 30, 2015 | 11,188 |  |  | $ | 2.83 |  |  | $ | 690 |
Options exercisable at September 30, 2015 | 6,622 |  |  | $ | 3.32 |  |  | $ | 618 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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