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STOCK-BASED COMPENSATION (Tables) | 9 Months Ended
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Sep. 30, 2020
Share-based Payment Arrangement [Abstract] |
Summary of stock options and stock awards | Stock option activity is summarized as follows:
| Number of options |  | Weighted average exercise price
Outstanding at December 31, 2019 | 3,966,858 |  |  | $ | 4.67 |
Granted | 1,376,900 |  |  | 7.94 |
Exercised | (81,131) |  |  | 3.03 |
Canceled and forfeited | (234,600) |  |  | 7.57 |
Outstanding at September 30, 2020 | 5,028,027 |  |  | $ | 5.45 |
Schedule of option fair value assumptions | We calculated the grant date fair value of options granted in 2020 ("2020 Grants") utilizing a Black Scholes model with an expected life calculated via the simplified method.
| 2020 Grants |  |  |  |
Strike price | $4.98 | - | $ | 8.18 |  |  |  |  |  |  |  |  |
Risk-free rate | 0.3% | - | 1.7 | % |  |  |  |  |  |
Expected dividend yield | — |  |  |  |
Expected volatility | 65.9% | - | 70.1 | % |  |  |  |  |  |  |  |
Expected term (in years) | 6 |  |  |  |  |  |

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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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