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STOCK-BASED COMPENSATION (Tables) | 9 Months Ended
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Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
SCHEDULE OF STOCK BASED COMPENSATION | The following table summarizes stock option-based compensation for the three and nine months ended September 30, 2020 and 2019: SCHEDULE OF STOCK BASED COMPENSATION
|  | For the three months ended September 30, |  |  | For the nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Research and development |  | $ | 765,000 |  |  | $ | 972,000 |  |  | $ | 2,380,000 |  |  | $ | 3,013,000 |
General and administrative |  |  | 484,000 |  |  |  | 854,000 |  |  |  | 1,703,000 |  |  |  | 2,594,000 |
Stock option-based compensation expense included in operating expense |  |  | 1,249,000 |  |  |  | 1,826,000 |  |  |  | 4,083,000 |  |  |  | 5,607,000 |
Total stock option-based compensation expense |  |  | 1,249,000 |  |  |  | 1,826,000 |  |  |  | 4,083,000 |  |  |  | 5,607,000 |
Tax benefit |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Stock option-based compensation expense, net of tax |  | $ | 1,249,000 |  |  | $ | 1,826,000 |  |  | $ | 4,083,000 |  |  | $ | 5,607,000 |
SCHEDULE OF WEIGHTED-AVERAGE ASSUMPTIONS TO ESTIMATE THE FAIR VALUE OF THE OPTIONS GRANTED | We used the following weighted-average assumptions to estimate the fair value of the options granted for the periods indicated: SCHEDULE OF WEIGHTED-AVERAGE ASSUMPTIONS TO ESTIMATE THE FAIR VALUE OF THE OPTIONS GRANTED
|  | For the three months ended September 30, |  |  | For the nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Expected volatility |  |  | 110% |  |  |  | 103% |  |  |  | 111% |  |  |  | 108% |
Expected term |  |  | 6.25 years |  |  |  | 6.25 years |  |  |  | 6.25 years |  |  |  | 5.09 years |
Risk-free interest rate |  |  | 0.16% |  |  |  | 1.83% |  |  |  | 0.29% |  |  |  | 2.21% |
Expected dividend yield |  |  | 0% |  |  |  | 0% |  |  |  | 0% |  |  |  | 0% |
SCHEDULE OF OPTIONS ACTIVITY | The following table summarizes the options granted for the periods indicated: SCHEDULE OF OPTIONS ACTIVITY
|  | For the three months ended September 30, |  |  | For the nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Options granted |  |  | 342,100 |  |  |  | 105,600 |  |  |  | 3,415,146 |  |  |  | 1,490,490 |
Weighted-average: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  | $ | 3.08 |  |  | $ | 2.58 |  |  | $ | 2.38 |  |  | $ | 6.53 |
Grant date fair value |  | $ | 2.56 |  |  | $ | 2.09 |  |  | $ | 1.99 |  |  | $ | 5.14 |
Restricted Stock [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
SCHEDULE OF STOCK BASED COMPENSATION | The following table summarizes restricted common stock compensation expense for the three and nine months ended September 30, 2020 and 2019: SCHEDULE OF STOCK BASED COMPENSATION
|  | For the three months ended September 30, |  |  | For the nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Research and development |  | $ | 89,000 |  |  | $ | 66,000 |  |  | $ | 561,000 |  |  | $ | 66,000 |
General and administrative |  |  | 72,000 |  |  |  | 32,000 |  |  |  | 251,000 |  |  |  | 282,000 |
Restricted stock-based compensation expense included in operating expense |  |  | 161,000 |  |  |  | 98,000 |  |  |  | 812,000 |  |  |  | 348,000 |
Total restricted stock-based compensation expense |  |  | 161,000 |  |  |  | 98,000 |  |  |  | 812,000 |  |  |  | 348,000 |
Tax benefit |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Restricted stock-based compensation expense, net of tax |  | $ | 161,000 |  |  | $ | 98,000 |  |  | $ | 812,000 |  |  | $ | 348,000 |

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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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