9. STOCK-BASED COMPENSATION (Tables)
   | 
6 Months Ended | 
Jun. 30, 2017  | 
| Stock Option Activity | 
    |   | 
  | 
    Number
    of Shares | 
  | 
  | 
    Weighted
    Average Exercise Price | 
  | 
  | 
    Weighted
    Average Remaining Contract Term (Years) | 
  | 
  | 
    Aggregate
    Intrinsic Value | 
  | 
 
    | Outstanding - December 31, 2016 | 
  | 
      | 
12,841,000 | 
  | 
  | 
    $ | 
1.57 | 
  | 
  | 
      | 
8.54 | 
  | 
  | 
    $ | 
415,135 | 
  | 
 
    | Granted | 
  | 
      | 
9,147,000 | 
  | 
  | 
      | 
0.37 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Exercised | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Cancelled/Forfeited (1) | 
  | 
      | 
6,525,280 | 
  | 
  | 
      | 
2.50 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Expired | 
  | 
      | 
14,722 | 
  | 
  | 
      | 
0.69 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Outstanding - June 30, 2017 | 
  | 
      | 
15,447,998 | 
  | 
  | 
      | 
0.47 | 
  | 
  | 
      | 
8.34 | 
  | 
  | 
      | 
145,625 | 
  | 
 
    |   | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Total exercisable - June 30, 2017 | 
  | 
      | 
10,969,781 | 
  | 
  | 
      | 
0.51 | 
  | 
  | 
      | 
7.98 | 
  | 
  | 
      | 
96,802 | 
  | 
 
    | Total unvested - June 30, 2017 | 
  | 
      | 
4,478,217 | 
  | 
  | 
      | 
0.37 | 
  | 
  | 
      | 
9.22 | 
  | 
  | 
      | 
48,823 | 
  | 
 
    | Total vested or expected to vest - June 30, 2017 | 
  | 
      | 
15,447,998 | 
  | 
  | 
      | 
0.47 | 
  | 
  | 
      | 
8.34 | 
  | 
  | 
      | 
145,625 | 
  | 
 
 
  
    |   | 
    (1) | 
    The number of options cancelled/forfeited includes options cancelled in connection with the
    Exchange Program (see below). | 
 
 
  
 | 
| Nonvested Stock Option Activity | 
    |   | 
  | 
  | 
    Number
    of Shares | 
  | 
  | 
    Weighted
    Average Fair Value Per Share on Grant Date | 
  | 
 
    |   | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    |   | 
Unvested
                                         stock options - December 31, 2016  | 
  | 
  | 
      | 
3,724,233 | 
  | 
  | 
    $ | 
0.63 | 
  | 
 
    |   | 
Granted  | 
  | 
  | 
      | 
9,147,000 | 
  | 
  | 
      | 
0.17 | 
  | 
 
    |   | 
Vested  | 
  | 
  | 
      | 
(1,867,736 | 
)  | 
  | 
      | 
0.34 | 
  | 
 
    |   | 
Cancellations  | 
  | 
  | 
      | 
(6,525,280 | 
)  | 
  | 
      | 
0.46 | 
  | 
 
    |   | 
Unvested stock options -
                                         June 30, 2017  | 
  | 
  | 
      | 
4,478,217 | 
  | 
  | 
      | 
0.44 | 
  | 
 
 
 | 
| Options Outside the Amended 2013 Plan [Member] | 
 
 | 
| Stock Option Activity | 
    |   | 
  | 
    Number
    of Shares | 
  | 
  | 
    Weighted
    Average Exercise Price | 
  | 
  | 
    Weighted
    Average Remaining Contract Term (Years) | 
  | 
  | 
    Aggregate
    Intrinsic Value | 
  | 
 
    |   | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    | Outstanding - December 31, 2016 | 
  | 
      | 
2,750,000 | 
  | 
  | 
    $ | 
0.37 | 
  | 
  | 
      | 
9.77 | 
  | 
  | 
    $ | 
170,500 | 
  | 
 
    | Granted | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Exercised | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Forfeited | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Expired | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Outstanding - June 30, 2017 | 
  | 
      | 
2,750,000 | 
  | 
  | 
      | 
0.37 | 
  | 
  | 
      | 
9.27 | 
  | 
  | 
      | 
– | 
  | 
 
    |   | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Total exercisable - June 30, 2017 | 
  | 
      | 
2,750,000 | 
  | 
  | 
      | 
0.37 | 
  | 
  | 
      | 
9.27 | 
  | 
  | 
      | 
– | 
  | 
 
    | Total unvested - June 30, 2017 | 
  | 
      | 
– | 
  | 
  | 
      | 
 – | 
  | 
  | 
      | 
 – | 
  | 
  | 
      | 
– | 
  | 
 
    | Total vested or expected to vest - June 30, 2017 | 
  | 
      | 
2,750,000 | 
  | 
  | 
      | 
0.37 | 
  | 
  | 
      | 
9.27 | 
  | 
  | 
      | 
– | 
  | 
 
 
 | 
| RSU activity outside of Amended 2013 Plan [Member] | 
 
 | 
| Stock Option Activity | 
    |   | 
  | 
    Number
    of Shares | 
  | 
  | 
    Weighted
    Average Exercise Price | 
  | 
  | 
    Weighted
    Average Remaining Contract Term (Years) | 
  | 
  | 
    Aggregate
    Intrinsic Value | 
  | 
 
    | Outstanding - December 31, 2016 | 
  | 
      | 
– | 
  | 
  | 
    $ | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
    $ | 
– | 
  | 
 
    | Granted | 
  | 
      | 
1,000,000 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
400,000 | 
  | 
 
    | Exercised | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Forfeited | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Expired | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    | Outstanding - June 30, 2017 | 
  | 
      | 
1,000,000 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
399,500 | 
  | 
 
    |   | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Total exercisable - June 30, 2017 | 
  | 
      | 
1,000,000 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
399,500 | 
  | 
 
    | Total unvested - June 30, 2017 | 
  | 
      | 
1,000,000 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
399,500 | 
  | 
 
    | Total vested or expected to vest - June 30, 2017 | 
  | 
      | 
1,000,000 | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
399,500 | 
  | 
 
 
 | 
| Nonvested Stock Option Activity | 
    |   | 
  | 
  | 
    Number
    of Shares | 
  | 
  | 
    Weighted
    Average Fair Value Per Share on Grant Date | 
  | 
 
    |   | 
Unvested RSU's - December
                                         31, 2016  | 
  | 
  | 
      | 
– | 
  | 
  | 
    $ | 
– | 
  | 
 
    |   | 
Granted  | 
  | 
  | 
      | 
1,000,000 | 
  | 
  | 
      | 
0.40 | 
  | 
 
    |   | 
Vested  | 
  | 
  | 
      | 
(1,000,000 | 
) | 
  | 
      | 
0.40 | 
  | 
 
    |   | 
Cancellations  | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    |   | 
Unvested RSU's - June 30,
                                         2017  | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
 
 |