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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of assumptions used to value stock options granted to employees and directors |
|  | For the six months ended |
|  | June 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 stock-based compensation expense |
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Product research and development |  | $ | 92 |  |  | $ | 58 |  |  | $ | 360 |  |  | $ | 118 |
Sales and marketing |  |  | 76 |  |  |  | 194 |  |  |  | 251 |  |  |  | 385 |
General and administrative |  |  | 175 |  |  |  | 501 |  |  |  | 804 |  |  |  | 836 |
Total stock based compensation expense |  | $ | 343 |  |  | $ | 753 |  |  | $ | 1,415 |  |  | $ | 1,339 |
|  | Remaining unamortized expense at June 30, 2014 |
Stock-based compensation |  | $ | 1,657 |
Summary of all warrant activity |
|  | June 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 |  |  | (20,000 | ) |  |  | 4.05 |  |  |  | - |
Exercised |  |  | (28,500 | ) |  |  | 2.85 |  |  |  | - |
Outstanding and exercisable, June 30, 2014 |  |  | 3,355,073 |  |  | $ | 4.45 |  |  |  | 1.44 |
Summary of outstanding warrants to purchase common stock |
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 |
September 2011 Employee Warrant |  |  | 9/12/2011 |  |  | $ | 3.90 |  |  |  | 20,000 |  |  |  | 9/12/2014 |
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 |  |  |  |  |  |  |  |  |  |  | 3,355,073 |  |  |  |  |
Stock Options [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of all stock option plans / warrant activity |
|  | Number of Options Outstanding |  |  |  | Weighted Average Exercise Price |
Outstanding at January 1, 2014 |  |  | 1,600,583 |  |  |  | $ | 5.22 |
Granted |  |  | 335,000 |  |  |  |  | 7.09 |
Expired |  |  | (600 | ) |  |  |  | 58.25 |
Outstanding at June 30, 2014 |  |  | 1,934,983 |  |  |  | $ | 5.53 |

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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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