Stock-Based Compensation (Tables)
|
3 Months Ended |
12 Months Ended |
Mar. 31, 2019 |
Dec. 31, 2018 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Schedule of RSA activity |
|
|
|
Number of
Shares
|
|
|
Weighted
Average Grant
Date Fair Value
|
|
|
Unvested, December 31, 2018
|
|
|
900,000 |
|
|
$ |
0.19 |
|
|
|
|
|
|
|
|
|
|
|
|
Granted
|
|
|
- |
|
|
|
- |
|
|
Released
|
|
|
(450,000 |
) |
|
|
0.19 |
|
|
Unvested, March 31, 2019
|
|
|
450,000 |
|
|
$ |
0.19 |
|
|
|
| Stock options | Omnibus Incentive Plan 2014 |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Schedule of shares available for future grant |
|
|
|
|
Shares Available for Grant
|
|
|
Available as of December 31, 2017
|
|
|
870,000 |
|
|
Share pool increase
|
|
|
10,190,774 |
|
|
Forfeited
|
|
|
427,000 |
|
|
Expired
|
|
|
48,000 |
|
|
Granted
|
|
|
(2,393,501 |
) |
|
Available as of December 31, 2018
|
|
|
9,142,273 |
|
|
| Schedule of summary of stock option activity |
|
|
|
|
Number of
Shares
|
|
|
Weighted
Average
Exercise Price
|
|
|
Weighted
Average Remaining
Contractual
Term
(Years)
|
|
|
Aggregate Intrinsic Value*
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2017
|
|
|
1,130,000 |
|
|
$ |
0.60 |
|
|
|
6.89 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Granted
|
|
|
1,750,000 |
|
|
|
0.30 |
|
|
|
|
|
|
|
|
|
Expired
|
|
|
(48,000 |
) |
|
|
2.57 |
|
|
|
|
|
|
|
|
|
Forfeited
|
|
|
(427,000 |
) |
|
|
0.66 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2018
|
|
|
2,405,000 |
|
|
$ |
0.33 |
|
|
|
8.71 |
|
|
$ |
182,000 |
|
|
Exercisable, December 31, 2018
|
|
|
859,417 |
|
|
$ |
0.37 |
|
|
|
7.39 |
|
|
$ |
36,458 |
|
|
Vested and Expected to Vest, December 31, 2018
|
|
|
2,405,000 |
|
|
$ |
0.33 |
|
|
|
8.71 |
|
|
$ |
182,000 |
|
*The aggregate intrinsic value is the sum of the amounts by which the quoted market price of the Company’s stock exceeded the exercise price of the stock options at December 31, 2018 for those stock options for which the quoted market price was in excess of the exercise price (“in-the-money options”).
|
| Schedule of fair value assumptions of stock option granted |
|
|
|
|
Year Ended
December 31, 2018
|
|
|
Dividend Yield
|
|
|
– |
|
|
Risk-free interest rate
|
|
3.06 – 3.1
|
%
|
|
Expected term (in years)
|
|
5.27-5.58
|
|
|
Volatility
|
|
70-93.6
|
%
|
|
| Stock options | Awards Granted Outside the 2014 Plan |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Schedule of fair value assumptions of stock option granted |
|
|
|
|
|
At Issuance
|
|
|
Dividend Yield
|
|
|
– |
|
|
Risk-free interest rate
|
|
|
2.79 |
% |
|
Expected term (in years)
|
|
|
5.54 |
|
|
Volatility
|
|
|
70 |
% |
|
| Restricted Stock Awards | Omnibus Incentive Plan 2014 |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Schedule of RSA activity |
|
|
|
|
Number of
Shares
|
|
|
Weighted
Average Grant
Date Fair Value
|
|
|
Unvested, December 31, 2017
|
|
|
1,050,000 |
|
|
$ |
0.75 |
|
|
|
|
|
|
|
|
|
|
|
|
Granted
|
|
|
643,501 |
|
|
|
0.26 |
|
|
Released
|
|
|
(1,050,000 |
) |
|
|
0.75 |
|
|
Unvested, December 31, 2018
|
|
|
643,501 |
|
|
$ |
0.26 |
|
|
| Restricted Stock Awards | Awards Granted Outside the 2014 Plan |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Schedule of RSA activity |
|
|
|
|
Number of
Shares
|
|
|
Weighted
Average Grant
Date Fair Value
|
|
|
Unvested, December 31, 2017
|
|
|
- |
|
|
$ |
- |
|
|
|
|
|
|
|
|
|
|
|
|
Granted
|
|
|
2,500,000 |
|
|
|
0.19 |
|
|
Released
|
|
|
(1,600,000 |
) |
|
|
0.19 |
|
|
Unvested, December 31, 2018
|
|
|
900,000 |
|
|
$ |
0.19 |
|
|