Stock-Based Compensation (Details Narrative) - USD ($)
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1 Months Ended |
3 Months Ended |
6 Months Ended |
Oct. 02, 2019 |
Jul. 31, 2019 |
Jan. 31, 2019 |
Oct. 29, 2018 |
Oct. 26, 2018 |
Oct. 31, 2018 |
Oct. 31, 2019 |
Oct. 31, 2018 |
Jan. 31, 2019 |
| Purchase price of incentive stock options as a percentage of its fair value |
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85.00%
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| Term of stock options |
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1 year 5 months 16 days
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| Intrinsic value of options outstanding |
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$ 1,000
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| Intrinsic value of options exercisable |
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300
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| Unrecognized stock-based compensation expenses |
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$ 1,300,000
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| Weighted-average grant date fair value of stock options granted |
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$ 1.34
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$ 9.90
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| Number of shares issued for service, value |
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$ 219,172
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$ 239,824
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| Authorized to issued shares under EMPP |
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131,373
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| Restricted Stock Units 1 (RSUs) [Member] |
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| Number of restricted stock shares issued |
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66,258
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| Stock-based compensation costs |
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$ 100,000
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| Restricted Stock Units (RSUs) [Member] |
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| Stock-based compensation costs |
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150,000
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| Restricted stock units granted |
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5,000
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| Restricted stock units vested |
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1,250
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3,750
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| Number of shares vesting, description |
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The Company's Board of Directors approved the accelerated vesting of 25% of the outstanding restricted stock units (RSUs) held by the employee. The RSUs, which originally vest on the third anniversary of the grant date, or March 29, 2020, were accelerated to vest on October 26, 2018.
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The units vest as follows: 1,250 units vested on October 29, 2018, and the remaining 3,750 units vest according to the following vesting schedule: 1,250 units on October 29, 2019, 1,250 units on October 29, 2020 and 1,250 units on October 29, 2021.
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| Restricted stock units exercise price |
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$ 16.40
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| Number of shares vesting percentage |
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25.00%
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| Modification of accrued expense on unvested stock units |
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$ 63,278
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| Fair value of vested stock grants |
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$ 44,250
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| Restricted Stock Units (RSUs) [Member] | October 29, 2019 [Member] |
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| Restricted stock units vested |
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1,250
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| Restricted Stock Units (RSUs) [Member] | October 29, 2020 [Member] |
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| Restricted stock units vested |
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1,250
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| Restricted Stock Units (RSUs) [Member] | October 29, 2021 [Member] |
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| Restricted stock units vested |
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1,250
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| Research And Development Expense [Member] |
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| Stock-based compensation costs |
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150,000
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750,000
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| General And Administrative Expense [Member] |
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| Stock-based compensation costs |
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$ 350,000
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$ 500,000
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| Consulting Agreements [Member] |
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| Number of restricted stock shares issued |
3,000
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| Agreement description |
On October 2, 2019, the Company entered into an amendment to a consulting agreement with a consulting firm. Prior to the amendment the Company was required to issue 3,000 restricted common shares monthly for services through July 2, 2020. As per the terms of the amended agreement, starting October 2, 2019, the Company will be required to issue 15,000 shares of restricted common stock monthly for services through July 2, 2020.
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| Incremental compensation cost of modification of award |
$ 200,000
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| Amended Consulting Agreements [Member] |
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| Number of restricted stock shares issued |
15,000
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| Maximum [Member] |
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| Fair value maturity |
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6 years 6 months
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6 years 6 months
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| Minimum [Member] |
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| Fair value maturity |
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5 years
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5 years
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| Common Stock [Member] |
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| Number of shares issued for service |
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35,687
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18,400
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| Number of shares issued for service, value |
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$ 4
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$ 2
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| Shares available for issuance |
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1,207
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| Employees [Member] |
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| Options granted to purchase shares |
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20,000
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| Term of stock options |
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10 years
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| Vesting period of stock options granted |
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3 years
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| Exercise price |
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$ 16.40
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| Consultants [Member] |
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| Options granted to purchase shares |
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25,000
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| Term of stock options |
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10 years
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| Exercise price |
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$ 14.30
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| Stock-based compensation costs |
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$ 250,000
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| Number of shares issued for service |
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60,300
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18,400
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| Number of shares issued for service, value |
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$ 857,730
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$ 240,000
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| Employees, Directors and Consultants [Member] |
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| Stock-based compensation costs |
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500,000
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$ 1,300,000
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| Consultants [Member] |
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| Stock-based compensation costs |
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$ 200,000
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| Number of shares issued for service |
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35,687
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| Number of shares issued for service, value |
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$ 200,000
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| 2011 Plan [Member] |
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| Number of shares authorized for issuance to awards granted |
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100,000
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| Provisional percentage of outstanding stock owned by stockholders |
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10.00%
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| Options granted to purchase shares |
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4,900
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| Exercise price |
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$ 1.97
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| 2011 Plan [Member] | Minimum [Member] |
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| Purchase price of incentive stock options as a percentage of its fair value |
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100.00%
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| Exercise price as a percentage of fair value of common stock |
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110.00%
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| 2011 Plan [Member] | Common Stock [Member] |
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| Number of shares authorized for issuance to awards granted |
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950,000
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| 2011 Plan [Member] | Common Stock [Member] | Maximum [Member] |
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| Maximum shares granted per fiscal year per individual |
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50,000
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| Stock option exercisable period |
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10 years
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| 2011 Plan [Member] | Employees, Directors and Consultants [Member] |
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| Employee stock purchase program description |
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The 2011 Plan authorizes a total of 750,000 shares for issuance thereunder, and includes an automatic increase of the number of shares of common stock reserved thereunder on the first business day of each calendar year by the lesser of: (i) 3% of the shares of the Company's common stock outstanding as of the last day of the immediately preceding calendar year; (ii) 100,000 shares; or (iii) such lesser number of shares as determined by the Company's Board of Directors.
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| Number of shares authorized for issuance to awards granted |
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750,000
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| Percentage of shares of common stock outstanding |
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3.00%
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| 2011 Plan [Member] | Employees [Member] |
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| Options granted to purchase shares |
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4,900
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11,100
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| Term of stock options |
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10 years
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10 years
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| Vesting period of stock options granted |
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3 years
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3 years
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| 2011 Plan [Member] | Employees [Member] | Maximum [Member] |
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| Exercise price |
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$ 2.21
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$ 15.80
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| 2011 Plan [Member] | Employees [Member] | Minimum [Member] |
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| Exercise price |
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$ 1.89
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$ 13.20
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| ESPP [Member] |
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| Stock-based compensation costs |
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$ 2,700
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$ 6,600
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| Authorized to issued shares under EMPP |
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50,000
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50,000
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| Shares available for issuance |
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37,608
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| Discount from market price, offering date |
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15.00%
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| Fair market value of unvested shares, percentage |
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15.00%
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| Fair value maturity |
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6 months
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| Fair value risk free interest rate |
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2.22%
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| Fair value volatility rate |
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61.83%
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| Fair value forfeitures percentage |
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0.00%
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| Fair value dividend |
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$ 0
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| ESPP [Member] | Six Month Call On Unvested Share [Member] |
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| Fair market value of unvested shares, percentage |
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85.00%
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| ESPP [Member] | Sixth Offering Period [Member] |
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| Shares purchased |
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1,428
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| ESPP [Member] | Seventh Offering Period [Member] |
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| Shares purchased |
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2,053
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| ESPP [Member] | January 31, 2020 [Member] |
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| Fair value maturity |
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6 months
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| Fair value risk free interest rate |
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2.04%
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| Fair value volatility rate |
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90.64%
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| Fair value forfeitures percentage |
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0.00%
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| Fair value dividend |
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$ 0
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