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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2014
Stock-Based Compensation [Abstract] |
Summary of stock-based compensation expense |
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Product research and development |  | $ | 73 |  |  | $ | 69 |  |  | $ | 433 |  |  | $ | 187 |
Sales and marketing |  |  | 51 |  |  |  | 364 |  |  |  | 302 |  |  |  | 749 |
General and administrative |  |  | 55 |  |  |  | 329 |  |  |  | 859 |  |  |  | 1,165 |
Total stock based compensation expense |  | $ | 179 |  |  | $ | 762 |  |  | $ | 1,594 |  |  | $ | 2,101 |
|  |  | Remaining unamortized expense at September 30, 2014 |
| Stock-based compensation |  |  | $ | 965 |
Summary of combined activity under stock option plans |
|  |  | Number of Options Outstanding |  |  | Weighted Average Exercise Price |
Outstanding at January 1, 2014 |  |  |  | 1,600,583 |  |  | $ | 5.22 |
Granted |  |  |  | 365,000 |  |  |  | 6.77 |
Expired/forfeited |  |  |  | (142,494 | ) |  |  | 11.74 |
Outstanding at September 30, 2014 |  |  |  | 1,823,089 |  |  | $ | 5.02 |
Summary of assumptions used to value stock options granted to employees and directors |
| For the nine months
|  | ended September 30, 2014
Annual dividend yield |  | -
Expected life (years) |  | 1.50 – 4.30
Risk-free interest rate |  | 0.27% - 1.47%
Expected volatility |  | 61% - 109%
Summary of all warrant activity |
|  | September 30, 2014 |
Outstanding and exercisable |  | Warrants |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life |
January 1, 2014 |  |  | 828,573 |  |  | $ | 2.39 |  |  |  | 2.06 |
Granted |  |  | 2,575,000 |  |  |  | 5.09 |  |  |  | -- |
Expired/cancelled |  |  | (40,000 | ) |  |  | 3.98 |  |  |  | -- |
Exercised |  |  | (28,500 | ) |  |  | 2.85 |  |  |  | -- |
Outstanding and exercisable, September 30, 2014 |  |  | 3,335,073 |  |  | $ | 4.45 |  |  |  | 1.19 |
Summary of outstanding warrants to purchase common stock |
Outstanding Warrants to Purchase Common Stock as of September 30, 2014:
Description |  | Issue Date |  |  | Exercise Price |  |  | Shares |  |  | Expiration Date |
August 2009 Employee Warrants |  |  | 8/25/2009 |  |  | $ | 0.50 |  |  |  | 80,000 |  |  |  | 8/25/2016 |
2007 Debt Extension Warrants |  |  | 9/22/2010 |  |  | $ | 1.00 |  |  |  | 16,000 |  |  |  | 9/22/2015 |
December 2010 Employee Warrants |  |  | 12/3/2010 |  |  | $ | 1.63 |  |  |  | 200,000 |  |  |  | 12/3/2015 |
February 2011 Legal Advisor Warrant |  |  | 2/22/2011 |  |  | $ | 2.50 |  |  |  | 80,000 |  |  |  | 2/22/2016 |
March 2011 Investor Warrants |  |  | 3/9/2011 |  |  | $ | 3.13 |  |  |  | 349,973 |  |  |  | 3/9/2016 |
March 2011 Investor Warrants |  |  | 4/7/2011 |  |  | $ | 3.13 |  |  |  | 34,100 |  |  |  | 4/7/2016 |
May 2014 Agent Warrant |  |  | 5/15/2014 |  |  | $ | 5.09 |  |  |  | 75,000 |  |  |  | 11/15/2015 |
May 2014 Investor Warrant |  |  | 5/15/2014 |  |  | $ | 5.09 |  |  |  | 2,500,000 |  |  |  | 11/15/2015 |
Total Warrants Outstanding |  |  |  |  |  |  |  |  |  |  | 3,335,073 |  |  |  |  |

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- Definition Stock based compensation expense related to stock options and warrants. + References No definition available. + 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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- Definition Tabular disclosure of the change in stock options. + References No definition available. + Details
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