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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2012
Stock-Based Compensation [Abstract] |
Summary of the combined activity under all of the stock option plans |
|  | Number of Options Outstanding |  |  | Weighted Average Exercise Price |
Outstanding at January 1, 2012 |  |  | 19,324 |  |  | $ | 92.19 |
Granted |  |  | 1,505,000 |  |  |  | 4.29 |
Cancelled or expired |  |  | (8,124 | ) |  |  | 69.36 |
Exercised |  |  | --- |  |  |  | --- |
Outstanding at September 30, 2012 |  |  | 1,516,200 |  |  | $ | 5.06 |
Summary of assumptions used to value stock options granted to employees and directors |
|  | For the Nine
|  | Months Ended September 30, 2012
Annual dividend yield |  |  | --
Expected life (years) |  |  | 3.85
Risk-free interest rate |  |  | 0.43% - 0.58%
Expected volatility |  |  | 177% - 186%
Stock based compensation expense related to stock options and warrants |
|  | Three months ended September 30, 2011 |  |  | Three months ended September 30, 2012 |
Stock-based compensation |  | $ | 45 |  |  | $ | 606 |
|  | Nine months ended September 30, 2011 |  |  | Nine months ended September 30, 2012 |  |  | Remaining unamortized expense at September 30, 2012 |
Stock-based compensation |  | $ | 517 |  |  | $ | 2,957 |  |  | $ | 3,222 |
Summary of all warrant activity |
|  | September 30, 2012 |
Outstanding and exercisable |  | Warrants |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life |
January 1, 2012 |  |  | 5,405,606 |  |  | $ | 0.57 |  |  |  | 3.56 |
Issued |  |  | -- |  |  | $ | -- |  |  |  | -- |
Expired/forfeited |  |  | (62,384 | ) |  |  | 1.25 |  |  |  | -- |
Exercised |  |  | (343,817 | ) |  | $ | 1.03 |  |  |  | -- |
Outstanding and exercisable, September 30, 2012 |  |  | 4,999,405 |  |  | $ | 1.60 |  |  |  | 1.63 |
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 |  |  |  | 240,000 |  |  | 8/25/2016 |
January 2010 Investor Warrant |  | 1/28/2010 |  |  | $ | 1.00 |  |  |  | 40,000 |  |  | 1/28/2013 |
2007 Debt Extension Warrants |  | 9/22/2010 |  |  | $ | 1.00 |  |  |  | 16,000 |  |  | 9/22/2015 |
September 2010 Repricing Warrant |  | 9/28/2010 |  |  | $ | 1.38 |  |  |  | 4,000 |  |  | 9/28/2013 |
October 2010 Repricing Warrants |  | 10/18/2010 |  |  | $ | 1.38 |  |  |  | 2,312,362 |  |  | 10/18/2013 |
October 2010 Employee Warrants |  | 10/15/2010 |  |  | $ | 1.38 |  |  |  | 1,400,000 |  |  | 10/15/2013 |
December 2010 Employee Warrants |  | 12/3/2010 |  |  | $ | 1.63 |  |  |  | 200,000 |  |  | 12/3/2015 |
January 2011 Employee Warrant |  | 1/21/2011 |  |  | $ | 2.00 |  |  |  | 20,000 |  |  | 1/21/2014 |
February 2011 Legal Advisor Warrant |  | 2/22/2011 |  |  | $ | 2.00 |  |  |  | 80,000 |  |  | 2/22/2016 |
March 2011 Investor Warrants |  | 3/9/2011 |  |  | $ | 3.13 |  |  |  | 612,943 |  |  | 3/9/2016 |
March 2011 Investor Warrants |  | 4/7/2011 |  |  | $ | 3.13 |  |  |  | 34,100 |  |  | 4/7/2016 |
May 2011 Consultant Warrant |  | 5/17/2011 |  |  | $ | 4.05 |  |  |  | 20,000 |  |  | 5/17/2014 |
September 2011 Employee Warrant |  | 9/12/2011 |  |  | $ | 3.90 |  |  |  | 20,000 |  |  | 9/12/2014 |
Total Warrants Outstanding |  |  |  |  |  |  |  |  |  |  | 4,999,405 |  |  |  |  |

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- Definition Schedule of outstanding warrants to purchase common stock. + References No definition available. + 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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