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Stock Options (Tables) | 6 Months Ended
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Jun. 30, 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 |  |  |  |  |  |  | $ | 2,491,026 |
Granted |  |  | 568,278 |  |  |  | 2.50 |  |  |  |  |  |  |  |  |
Exercise |  |  | (21,333 | ) |  |  | 0.80 |  |  |  |  |  |  |  | 48,496 |
Forfeited |  |  | (25,335 | ) |  |  | 2.28 |  |  |  |  |  |  |  | 30,987 |
Outstanding at June 30, 2021 |  |  | 3,117,310 |  |  |  | 2.03 |  |  |  | 7.17 |  |  |  | 3,555,431 |
Vested and exercisable at June 30, 2021 |  |  | 2,084,461 |  |  |  | 2.01 |  |  |  | 7.19 |  |  |  | 2,635,699 |
Outstanding at January 1, 2020 |  |  | 2,004,318 |  |  | $ | 1.72 |  |  |  |  |  |  | $ | 2,542,361 |
Granted |  |  | 634,756 |  |  |  | 2.58 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (64,330 | ) |  |  | 0.92 |  |  |  |  |  |  |  | 18,520 |
Expired |  |  | (3,333 | ) |  |  | 0.79 |  |  |  |  |  |  |  | 3,166 |
Outstanding at June 30, 2020 |  |  | 2,571,411 |  |  | $ | 1.95 |  |  |  | 7.94 |  |  | $ | 1,165,626 |
Vested and exercisable at June 30, 2020 |  |  | 1,623,746 |  |  | $ | 1.97 |  |  |  | 8.23 |  |  | $ | 971,228 |
Schedule of measured fair value of each option award grant using the black-scholes-nerton (BSM) pricin |
|  | Six Months ended |
|  | June 30, |
|  | 2021 |  |  | 2020 |
Exercise price |  | $ | 2.38 to 2.97 |  |  | $ | 1.74 to 2.89 |
Expected life |  |  | 5 years |  |  |  | 5 years |
Expected volatility |  |  | 93 | % |  |  | 71 | %
Dividend yield |  |  | 0 |  |  |  | 0 | %
Risk-free interest rate |  |  | 0.31% to 0.93 | % |  |  | 0.28% 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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