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Stock Options (Tables) | 3 Months Ended
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Mar. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of stock option |
|  | Number of options |  |  | Weighted average exercise price |  |  | Weighted average contractual term (years) |  |  | Aggregate intrinsic value |
Outstanding at January 1, 2021 |  |  | 2,595,700 |  |  | $ | 1.92 |  |  |  |  |  |  |  |  |
Granted |  |  | 543,697 |  |  |  | 2.48 |  |  |  |  |  |  |  |  |
Exercised |  |  | (16,000 | ) |  |  | 0.81 |  |  |  |  |  |  |  | 40,010 |
Cancelled |  |  | (4,667 | ) |  |  | 0.82 |  |  |  |  |  |  |  | 9,564 |
Outstanding at March 31, 2021 |  |  | 3,118,730 |  |  | $ | 2.03 |  |  |  | 7.39 |  |  | $ | 2,681,180 |
Vested and exercisable at March 31, 2021 |  |  | 1,819,541 |  |  | $ | 1.95 |  |  |  | 7.68 |  |  | $ | 2,029,793 |
Outstanding at January 1, 2020 |  |  | 2,004,318 |  |  | $ | 1.72 |  |  |  |  |  |  |  |  |
Granted |  |  | 425,000 |  |  |  | 2.53 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (9,500 | ) |  |  | 1.17 |  |  |  |  |  |  |  | 4,453 |
Expired |  |  | - |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2020 |  |  | 2,419,818 |  |  | $ | 1.86 |  |  |  | 8.05 |  |  | $ | 539,949 |
Vested and exercisable at March 31, 2020 |  |  | 853,485 |  |  | $ | 2.49 |  |  |  | 7.77 |  |  | $ | 226,328 |
Schedule of measured fair value of each option award grant using the black-scholes-nerton (BSM) pricing model |
|  | Three Months ended |
|  | March 31, |
|  | 2021 |  |  | 2020 |
Exercise price |  | $ | 2.38 to $2.76 |  |  | $ | 2.53 |
Expected life |  |  | 5.0 years |  |  |  | 5.1 years |
Expected volatility |  |  | 93 | % |  |  | 64 | %
Dividend yield |  |  | 0 | % |  |  | 0 | %
Risk-free interest rate |  |  | 0.31% to 0.93 | % |  |  | 1.67% to 1.72 | %

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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