Note 13 - Stock Option and Incentive Plan (Tables)
|
9 Months Ended |
12 Months Ended |
Sep. 30, 2015 |
Dec. 31, 2014 |
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
|
|
| Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
| |
|
Number of Restricted Shares |
|
|
Weighted-Average Grant Date Fair Value |
|
| Outstanding and not vested beginning balance as of January 1, 2015 |
|
|
7,186 |
|
|
$ |
2.16 |
|
| Granted |
|
|
— |
|
|
$ |
— |
|
| Forfeited/cancelled |
|
|
— |
|
|
$ |
— |
|
| Released/vested |
|
|
(7,186 |
) |
|
$ |
2.16 |
|
| Outstanding and not vested as of September 30, 2015 |
|
|
— |
|
|
$ |
— |
|
|
| |
|
Number of Restricted Shares |
|
|
Weighted-Average Grant Date Fair Value |
|
| Outstanding and not vested beginning balance as of January 1, 2013 |
|
|
48,073 |
|
|
$ |
2.50 |
|
| Granted |
|
|
2,500,000 |
|
|
$ |
0.03 |
|
| Forfeited/cancelled |
|
|
(21,798 |
) |
|
$ |
2.46 |
|
| Released/vested |
|
|
(635,323 |
) |
|
$ |
0.08 |
|
| Outstanding and not vested beginning balance as of January 1, 2014 |
|
|
1,890,952 |
|
|
$ |
0.05 |
|
| Granted |
|
|
— |
|
|
$ |
— |
|
| Forfeited/cancelled |
|
|
— |
|
|
$ |
— |
|
| Released/vested |
|
|
(1,883,766 |
) |
|
$ |
0.04 |
|
| Outstanding and not vested as of December 31, 2014 |
|
|
7,186 |
|
|
$ |
2.16 |
|
|
| Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| |
|
Number of Shares Subject to Option |
|
|
Weighted- Average Exercise Price |
|
| Outstanding as of January 1, 2015 |
|
|
37,034,483 |
|
|
$ |
0.03 |
|
| Granted |
|
|
— |
|
|
$ |
— |
|
| Forfeited/cancelled/expired |
|
|
37,034,483 |
|
|
$ |
0.03 |
|
| Exercised |
|
|
— |
|
|
$ |
— |
|
| Outstanding as of September 30, 2015 |
|
|
— |
|
|
$ |
— |
|
| Exercisable as of September 30, 2015 |
|
|
— |
|
|
$ |
— |
|
|
| |
|
Number of Shares Subject To Option 2014 |
|
|
Weighted-Average Exercise Price |
|
|
Number of Shares Subject To Option 2013 |
|
|
Weighted-Average Exercise Price |
|
| Outstanding beginning balance |
|
|
6,618,233 |
|
|
$ |
0.11 |
|
|
|
679,744 |
|
|
$ |
2.82 |
|
| Granted during the year |
|
|
30,456,250 |
|
|
|
0.02 |
|
|
|
6,400,000 |
|
|
|
0.03 |
|
| Forfeited/cancelled/expired during the year |
|
|
(40,000 |
) |
|
|
5.15 |
|
|
|
(461,511 |
) |
|
|
3.29 |
|
| Exercised during the year |
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Outstanding at end of year |
|
|
37,034,483 |
|
|
$ |
0.03 |
|
|
|
6,618,233 |
|
|
$ |
0.11 |
|
| Exercisable at end of year |
|
|
5,934,303 |
|
|
$ |
0.09 |
|
|
|
2,330,650 |
|
|
$ |
0.28 |
|
| Outstanding and expected to vest |
|
|
36,916,502 |
|
|
$ |
0.03 |
|
|
|
6 191,212 |
|
|
$ |
0.11 |
|
|
| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|
| |
|
Years Ended December 31, |
|
| |
|
2014 |
|
|
2013 |
|
| Weighted-average volatility |
|
|
185.0 |
% |
|
|
105.5 |
% |
| Expected dividends |
|
|
0.0 |
% |
|
|
0.0 |
% |
| Expected life (in years) |
|
3.5 |
|
|
2.0 |
|
| Weighted-average risk-free interest rate |
|
|
1.1 |
% |
|
|
0.30 |
% |
|
| Schedule of Nonvested Share Activity [Table Text Block] |
|
| |
|
Non-Vested Stock Options |
|
|
Weighted-Average Grant Date Fair Value |
|
| Outstanding as of January 1, 2014 |
|
|
4,287,583 |
|
|
$ |
0.02 |
|
| Granted |
|
|
30,456,250 |
|
|
$ |
0.02 |
|
| Forfeited/cancelled |
|
|
(40,000 |
) |
|
$ |
3.04 |
|
| Released/vested |
|
|
(3,637,403 |
) |
|
$ |
0.02 |
|
| Outstanding as of December 31, 2014 |
|
|
31,066,430 |
|
|
$ |
0.02 |
|
|
| Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|
| |
|
|
|
|
|
Options Outstanding |
|
|
Vested Options |
|
| |
|
|
|
|
|
Number Outstanding |
|
|
Weighted- Average Remaining Contractual Life (in years) |
|
|
Weighted- Average Exercise Price |
|
|
Number Outstanding |
|
|
Weighted- Average Exercise Price |
|
| |
|
|
$0.0192 |
|
|
|
12,450,000 |
|
|
|
4.6 |
|
|
$ |
0.02 |
|
|
|
358,320 |
|
|
$ |
0.02 |
|
| |
$0.020 |
- |
$0.023 |
|
|
|
18,000,000 |
|
|
|
4.6 |
|
|
$ |
0.02 |
|
|
|
1,125,000 |
|
|
$ |
0.02 |
|
| |
|
|
$0.0296 |
|
|
|
6,400,000 |
|
|
|
3.8 |
|
|
$ |
0.0296 |
|
|
|
4,266,500 |
|
|
$ |
0.0296 |
|
| |
$0.11 |
- |
$5.32 |
|
|
|
184,483 |
|
|
|
1.3 |
|
|
$ |
1.95 |
|
|
|
184,483 |
|
|
$ |
1.95 |
|
| |
$0.0192 |
- |
$5.32 |
|
|
|
37,034,483 |
|
|
|
4.4 |
|
|
$ |
0.03 |
|
|
|
5,934,303 |
|
|
$ |
0.09 |
|
|