STOCK-BASED COMPENSATION (Tables)
|
12 Months Ended |
Dec. 31, 2017 |
|---|
| Stock-based Compensation Tables |
|
| Fair values of stock options |
| |
|
Year
Ended
December
31,
2017 |
|
|
Year
Ended
December
31,
2016 |
|
| Risk
free interest rate |
|
|
1.53 |
% |
|
|
1.52 |
% |
| Expected
life (in years) |
|
|
5.0 |
|
|
|
5.5 |
|
| Expected
volatility |
|
|
45.54 |
% |
|
|
95.24 |
% |
| Expected
dividend yield |
|
|
0.00 |
% |
|
|
0.00 |
% |
| Stock
price |
|
$ |
3.85 |
|
|
$ |
0.638 |
|
|
| Summary of stock option activity |
| |
|
Options
Outstanding |
|
|
Weighted
Average
Exercise Price |
|
|
Weighted
Average Fair
Value |
|
|
Weighted
Average
Remaining
Contractual
Life
(years) |
|
| Outstanding
at January 1, 2016 |
|
|
136,369 |
|
|
$ |
0.55 |
|
|
$ |
0.49 |
|
|
|
9.05 |
|
| Options
granted |
|
|
163,641 |
|
|
|
0.55 |
|
|
|
0.49 |
|
|
|
9.04 |
|
| Expired |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Forfeited
options |
|
|
(38,638 |
) |
|
|
0.55 |
|
|
|
0.49 |
|
|
|
8.04 |
|
| Exercised |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Outstanding
at December 31, 2016 |
|
|
261,372 |
|
|
$ |
0.55 |
|
|
$ |
0.49 |
|
|
|
8.63 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Options
granted |
|
|
61,335 |
|
|
|
3.85 |
|
|
|
1.59 |
|
|
|
4.60 |
|
| Expired |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Forfeited
options |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Exercised |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Outstanding
at December 31, 2017 |
|
|
322,707 |
|
|
$ |
1.29 |
|
|
$ |
0.70 |
|
|
|
7.05 |
|
|
| Fair values warrants assumptions |
| |
|
Year
Ended
December
31,
2017 |
|
|
Year
Ended
December
31,
2016 |
|
| Risk
free interest rate |
|
|
1.89 |
% |
|
|
1.96 |
% |
| Expected
life (in years) |
|
|
4.7 |
|
|
|
5.0 |
|
| Expected
volatility |
|
|
46.80 |
% |
|
|
80.49 |
% |
| Expected
dividend yield |
|
|
0.00 |
% |
|
|
0.00 |
% |
| Stock
price |
|
$ |
2.98 |
|
|
$ |
0.638 |
|
|
| Summary of stock warrant activity |
| |
|
Warrants
Outstanding |
|
|
Weighted
Average
Exercise Price |
|
|
Weighted
Average Fair
Value |
|
|
Weighted
Average
Remaining
Contractual
Life
(years) |
|
| Outstanding
at January 1, 2016 |
|
|
9,090 |
|
|
|
13.75 |
|
|
|
0.11 |
|
|
|
4.90 |
|
| Warrants
issued |
|
|
102,039 |
|
|
|
8.25 |
|
|
|
0.11 |
|
|
|
5.00 |
|
| Expired |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Forfeited
warrants |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Exercised |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Outstanding
at December 31, 2016 |
|
|
111,129 |
|
|
$ |
8.25 |
|
|
$ |
0.11 |
|
|
|
4.91 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants
issued |
|
|
595,133 |
|
|
|
2.91 |
|
|
|
1.74 |
|
|
|
4.28 |
|
| Expired |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Forfeited
warrants |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| Exercised |
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
|
|
-- |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Outstanding
at December 31, 2017 |
|
|
706,262 |
|
|
$ |
3.27 |
|
|
$ |
1.48 |
|
|
|
4.22 |
|
|
| Summary of stock option and warrants outstanding |
| |
|
|
Outstanding |
|
|
Exercisable |
|
| |
|
|
|
|
|
Weighted
Average
Remaining
|
|
|
Weighted
Average |
|
|
|
|
|
Weighted
Average |
|
| |
Range
of
Exercise
Prices |
|
Number
Outstanding |
|
|
Contractual
Life
(years) |
|
|
Exercise
Price |
|
|
Number
Exercisable |
|
|
Exercise
Price |
|
| $ |
0.11-0.55 |
|
|
534,099 |
|
|
|
5.97 |
|
|
$ |
0.33 |
|
|
|
483,340 |
|
|
$ |
0.30 |
|
| |
2.00-3.85 |
|
|
86,355 |
|
|
|
4.63 |
|
|
|
3.31 |
|
|
|
86,335 |
|
|
|
3.31 |
|
| |
5.10-7.20 |
|
|
408,535 |
|
|
|
4.08 |
|
|
|
5.46 |
|
|
|
408,535 |
|
|
|
5.46 |
|
| $ |
0.11-7.20
|
|
|
1,028,969
|
|
|
|
5.11
|
|
|
$ |
2.61
|
|
|
|
978,210
|
|
|
$ |
2.72 |
|
|