10. Warrant Liabilities (Tables)
|
12 Months Ended |
Dec. 31, 2014 |
| Warrants and Rights Note Disclosure [Abstract] |
|
| Schedule of Warrant Valuation Assumptions |
| | |
December
31, | | |
April
3, | | |
April
2, | |
| | |
2014 | | |
2014 | | |
2014 | |
| Number of shares underlying the warrants | |
| 82,019,318 | | |
| 30,136,713
(a) | | |
| 47,726,094 | |
| Exercise price | |
| $0.001 - $0.80 | | |
$ | 0.001 | | |
| $0.595 - $0.80 | |
| Volatility | |
| 112.99% - 207.33% | | |
| 183.30% | | |
| 134% - 158% | |
| Risk-free interest rate | |
| 0.04% - 1.05% | | |
| 0.11% | | |
| 0.28% - 1.73% | |
| Expected dividend yield | |
| 0.00% | | |
| 0.00% | | |
| 0.00% | |
| Expected warrant life (years) | |
| 0.25 - 2.88 | | |
| 1 | | |
| 1.42 - 3.63 | |
| Stock price | |
| $0.04 | | |
| $0.08 | | |
| $0.09 | |
|
| Schedule of Warrant Liabilities at Fair Value |
| | |
December 31, | | |
Acquisition Measurement Date | | |
Initial | | |
Increase
(Decrease)
in | | |
December 31, | |
| | |
2013 | | |
April 2, 2014 | | |
Measurement | | |
Fair
Value | | |
2014 | |
| 2011 Unit Offering | |
$ | | | |
$ | 1,242,333 | | |
$ | | | |
$ | (738,272 | ) | |
$ | 504,061 | |
| 2011 Unit Offering Placement Agent | |
| | | |
| 156,367 | | |
| | | |
| (84,769 | ) | |
| 71,598 | |
| 2012 Bridge Warrant | |
| | | |
| 20,690 | | |
| | | |
| (19,389 | ) | |
| 1,301 | |
| 2012 Bridge Warrant Placement Agent | |
| | | |
| 4,138 | | |
| | | |
| (3,878 | ) | |
| 260 | |
| 2012 Unit Offering | |
| | | |
| 137,178 | | |
| | | |
| (105,314 | ) | |
| 31,864 | |
| 2012 Unit Offering Placement Agent | |
| | | |
| 96,481 | | |
| | | |
| (44,242 | ) | |
| 52,239 | |
| 2013 Merger related notes converted | |
| | | |
| 11,608 | | |
| | | |
| (7,736 | ) | |
| 3,872 | |
| 2014 Senior Note Purchase | |
| | | |
| | | |
| 2,407,930 | | |
| (1,039,630 | ) | |
| 1,368,300 | |
| | |
$ | | | |
$ | 1,668,795 | | |
$ | 2,407,930 | | |
$ | (2,043,230 | ) | |
$ | 2,033,495 | |
|
| Schedule of Warrant Subject to Remeasurement |
| | |
Number
of Warrants | |
| | |
December 31, | | |
April 2, 2014 | | |
Warrant | | |
December 31, | |
| | |
2013 | | |
Acquisition | | |
Additions | | |
Reductions | | |
2014 | |
| 2011 Unit Offering | |
| | | |
| 33,277,837 | | |
| | | |
| | | |
| 33,277,837 | |
| 2011 Unit Offering Placement Agent | |
| | | |
| 4,726,891 | | |
| | | |
| | | |
| 4,726,891 | |
| 2012 Bridge Warrant | |
| | | |
| 1,137,735 | | |
| | | |
| | | |
| 1,137,735 | |
| 2012 Bridge Warrant Placement Agent | |
| | | |
| 227,546 | | |
| | | |
| | | |
| 227,546 | |
| 2012 Unit Offering | |
| | | |
| 6,300,213 | | |
| | | |
| | | |
| 6,300,213 | |
| 2012 Unit Offering Placement Agent | |
| | | |
| 1,561,544 | | |
| | | |
| | | |
| 1,561,544 | |
| 2013 Merger related notes converted | |
| | | |
| 494,328 | | |
| | | |
| | | |
| 494,328 | |
| 2014 Senior Note Purchase | |
| | | |
| | | |
| 34,293,224 | (a) | |
| | | |
| 34,293,224 | |
| | |
| | | |
| 47,726,094 | | |
| 34,293,224 | | |
| | | |
| 82,019,318 | |
|