WARRANTS AND DERIVATIVE WARRANT LIABILITY | 6 Months Ended |
Jun. 30, 2014 |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | ' |
Derivatives and Fair Value [Text Block] | ' |
NOTE 10 – WARRANTS AND DERIVATIVE WARRANT LIABILITY |
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We account for common stock purchase warrants as either equity instruments or derivative liabilities depending on the specific terms of the warrant agreement. Warrants are accounted for as derivative liabilities if the warrants allow for cash settlement or provide for modification of the warrant exercise price in the event subsequent sales of common stock by the Company are at a lower price per share than the then-current warrant exercise price. We classify derivative warrant liabilities on the balance sheet at fair value, and changes in fair value during the periods presented in the statement of operations, which is revalued at each balance sheet date subsequent to the initial issuance of the warrant. At June 30, 2014, all outstanding liability-classified warrants were either exercised or had expired. |
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Transactions involving our equity-classified warrants are summarized as follows: |
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| | | | | Weighted- | Weighted-average | | Aggregate | |
| | | average | remaining | | intrinsic | |
| Number of | | exercise | contractual term | | value (in | |
| | shares | | price | | (in years) | | thousands) | |
Outstanding at December 31, 2013 | | | 10,216,597 | | $ | 2.56 | | | | | | | |
Granted | | | 11,315,847 | | $ | 0.94 | | | | | | | |
Exercised | | | — | | | — | | | | | | | |
Forfeited | | | -1,021,457 | | $ | 2.91 | | | | | | | |
Outstanding at June 30, 2014 | | | 20,510,987 | | $ | 1.65 | | | 2.2 | | $ | 692 | |
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Exercisable at June 30, 2014 | | | 20,510,987 | | $ | 1.65 | | | 2.2 | | $ | 692 | |
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During the six months ended June 30, 2014, no warrants were exercised. During the six months ended June 30, 2013, 200,668 warrants were exercised into an equivalent number of common shares and 1,000,000 warrants were exercised on a cashless basis into 537,722 common shares. The following table summarizes outstanding common stock purchase warrants as of June 30, 2014: |
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| | | | | Weighted- | | | | | | | |
| | | average | | | | | | | |
| Number of | | exercise | | | | | | | |
| | shares | | price | | Expiration | | | | | |
Equity–classified warrants | | | | | | | | | | | | | |
Issued to consultants | | | 1,163,759 | | $ | 2.38 | | July 2014 through February 2019 | | | | | |
Issued pursuant to 2009 financings | | | 495,059 | | $ | 3 | | July 2014 through September 2014 | | | | | |
Issued pursuant to 2010 financings | | | 1,022,943 | | $ | 3.38 | | January 2015 through May 2015 | | | | | |
Issued pursuant to 2011 financings | | | 1,936,785 | | $ | 3.24 | | January 2016 through April 2016 | | | | | |
Issued pursuant to 2012 financings | | | 296,366 | | $ | 3 | | Dec-17 | | | | | |
Issued pursuant to 2013 financings | | | 4,376,228 | | $ | 1.97 | | December 2017 through August 2023 | | | | | |
Issued pursuant to 2014 financings | | | 11,219,847 | | $ | 0.93 | | March 2015 through June 2019 | | | | | |
| | | 20,510,987 | | | | | | | | | | |
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Equity-classified Warrants |
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During the six months ended June 30, 2014, in connection with our registered offering, we issued an aggregate of 10,736,722 common stock purchase warrants, including 10,409,905 issued to investors; and 326,817 to the placement agents. The warrants were issued with an exercise prices between $0.85 and $1.15 per share. |
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Additionally, we also issued 483,125 common stock purchase warrants to investors in our June 2014 private offering. The warrants have an exercise price of $1.15 per share. |
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We also issued warrants to consultants to purchase 96,000 shares of common stock at an exercise price of $3.00 per share. The per share weighted-average fair value of the warrants granted to consultants during 2014 was estimated at $0.41 per share on the date of grant. During the six months ended June 30, 2013, no warrants were issued to consultants. Total stock-based compensation expense of approximately $40,000 and $2,000 was recognized for warrants and included in the statement of operations for the six months ended June 30, 2014 and 2013, respectively. |
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During the six months ended June 30, 2013, in connection with the offering of our securities, we issued an aggregate of 776,204 common stock purchase warrants, including: 686,420 pursuant to closings in January 2013 and March 2013; 18,410 to the placement agent; and 71,374 additional warrants issued to investors that participated in the December 2012 closing. All warrants were issued with an exercise price of $3.00 per share. |
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Liability-classified Warrants |
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We have assessed our outstanding equity-linked financial instruments and have concluded that certain of our warrants are subject to derivative accounting as a result of certain non-standard anti-dilution provisions contained in the warrants. The fair value of these warrants is classified as a liability in our financial statements with the change in fair value during the periods presented, recorded in the statement of operations. At June 30, 2014, all outstanding liability-classified warrants were either exercised or had expired. |
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We did not record a gain or loss during the three or six months ended June 30, 2014, as the outstanding liability-classified warrants were either exercised or had expired. We recorded a gain of $0.3 million and $0.8 million during the three and six months ended June 30, 2013, respectively, related to the change in fair value of the warrant derivative liability during that period. The following table summarizes the calculated aggregate fair values for the warrant derivative liability using the Black-Scholes method based on the following assumptions: |
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| | Fair value as of | | | | | | | | | | |
June 30, 2013 | | | | | | | | | |
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Calculated aggregate value (in thousands) | | $ | 1,010 | | | | | | | | | | |
Exercise price per share of warrant | | $ | 1.5 | | | | | | | | | | |
Closing price per share of common stock | | $ | 2.15 | | | | | | | | | | |
Volatility | | | 50 | % | | | | | | | | | |
Expected term (years) | | | 0.3 | | | | | | | | | | |
Risk-free interest rate | | | 0.07 | % | | | | | | | | | |
Dividend yield | | | 0 | % | | | | | | | | | |
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