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Stock Options and Warrants (Tables) | 12 Months Ended
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Dec. 31, 2019
Warrant [Member] |
Schedule of company's stock options |
|  | Warrants |  |  | Wtd. Avg. Exercise Price |  |  | Wtd. Ave. Remaining Contractual Life (years) |
Balance, January 1, 2018 |  |  | 1,704,102 |  |  |  | 2.66 |  |  |  | 4.04 |
Granted during the period |  |  | 535,600 |  |  |  | 1.45 |  |  |  | 4.35 |
Terminated/Expired during the period |  |  | - |  |  |  | - |  |  |  | - |
Balance, December 31, 2018 |  |  | 2,239,702 |  |  | $ | 3.10 |  |  |  | 3.35 |
Granted during the period |  |  | - |  |  |  | - |  |  |  | - |
Terminated/Expired during the period |  |  | (56,800 | ) |  | $ | 10.80 |  |  |  | - |
Balance, December 31, 2019 |  |  | 2,182,902 |  |  | $ | 2.90 |  |  |  | 2.43 |
Exercisable at December 31, 2019 |  |  | 2,182,902 |  |  | $ | 2.90 |  |  |  | 2.43 |
Schedule of stock options/ warrants granted |
|  | 2019 |  |  | 2018 |
Risk-free interest rates |  |  | 2.33 | % |  |  | 2.69 | %
Expected life (in years) |  |  | 4.9 |  |  |  | 4.9 |
Expected volatility |  |  | 116.0 | % |  |  | 66 | %
Dividend yield |  |  | 0.0 | % |  |  | 0.0 | %
Weighted-average grant date fair value per share |  |  | 1.24 |  |  | $ | 1.24 |
Employee Stock Option [Member] |
Schedule of fair values of stock options granted |
|  | 2019 |  |  | 2018 |
Risk-free interest rates |  |  | 1.87% - 2.60 | % |  |  | 2.69 | %
Expected life (in years) |  |  | 4.90 - 6.80 |  |  |  | 4.90 |
Expected volatility |  |  | 65.8% - 72.4 | % |  |  | 66 | %
Dividend yield |  |  | 0.00 | % |  |  | 0.00 | %
Weighted-average grant date fair value per share |  | $ | 0.50 |  |  | $ | 0.72 |
Schedule of company's stock options |
|  | Options |  |  | Wtd. Avg. Exercise Price |
Balance, January 1, 2018 |  |  | 1,048,627 |  |  | $ | 3.20 |
Granted during the period |  |  | 88,000 |  |  |  | 1.56 |
Exercised during the period |  |  | - |  |  |  | - |
Terminated/Expired during the period |  |  | (298,478 | ) |  |  | 3.04 |
Balance, December 31, 2018 |  |  | 838,149 |  |  | $ | 3.08 |
Granted during the period |  |  | 613,000 |  |  |  | 0.96 |
Exercised during the period |  |  | (15,000 | ) |  |  | 0.88 |
Terminated/Expired during the period |  |  | (66,500 | ) |  |  | 7.46 |
Balance, December 31, 2019 |  |  | 1,369,649 |  |  | $ | 2.01 |
Exercisable at December 31, 2019 |  |  | 1,269,649 |  |  | $ | 2.06 |
Schedule of stock options/ warrants granted |
Range of Exercise Prices |  | Number Outstanding |  |  | Wtd. Avg. Life |  | Wtd. Avg. Exercise Price |
$ 0.00 - $ 5.00 |  |  | 1,224,000 |  |  | 5.20 years |  | $ | 8.18 |
$ 5.01 - $ 20.00 |  |  | 145,000 |  |  | 1.60 years |  |  | 1.56 |
$0.00 - $20.00 |  |  | 1,369,000 |  |  | 4.40 years |  | $ | 3.08 |

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