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Share-Based Payments | 6 Months Ended
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Oct. 31, 2020
Share-based Payment Arrangement [Abstract] |
Share-Based Payments | Share-Based Payments The Company has in place a 2010 Equity Incentive Plan and a 2008 Equity Incentive Plan. In general, these plans provide for stock-based compensation in the form of (i) Non-statutory Stock Options; (ii) Restricted Stock Awards; and (iii) Stock Appreciation Rights to the Company’s employees, directors and non-employees. The plans also provide for limits on the aggregate number of shares that may be granted, the term of grants and the strike price of option awards. Stock-based compensation expense was recognized as follows (table in thousands):
| Three Months Ended October 31, |  | Six Months Ended October 31, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019 |  |  |  |
General and administrative | $ | 10 |  |  | $ | 39 |  |  | $ | 57 |  |  | $ | 171 |  |  |  |  |
Sales and marketing | 49 |  |  | 27 |  |  | 97 |  |  | 49 |  |  |  |  |
Research and development | 5 |  |  | 2 |  |  | 9 |  |  | 5 |  |  |  |  |
Cost of oncology services | 21 |  |  | 9 |  |  | 42 |  |  | (17) |  |  |  |  |
Total stock-based compensation expense | $ | 85 |  |  | $ | 77 |  |  | $ | 205 |  |  | $ | 208 |  |  |  |  |
Stock Option Grants Black-Scholes assumptions used to calculate the fair value of options granted during the three and six months ended October 31, 2020 and 2019 were as follows:
| Three Months Ended October 31, |  | Six Months Ended October 31, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019 |  |  |  |
Expected term in years | 6 |  | 6 |  | 6 |  | 6 |  |  |  |
Risk-free interest rates | 0.27% |  | 1.57% |  | 0.27%-0.39% |  | 1.57% |  |  |  |
Volatility | 72.83% |  | 71.11% |  | 72.64%-72.83% |  | 71.11% |  |  |  |
Dividend yield | —% |  | —% |  | —% |  | —% |  |  |  |
The weighted average fair value of stock options granted during the three months ended October 31, 2020 and 2019 was $7.05 and $3.32, respectively, and $7.29 and $3.32 for the six months ended October 31, 2020 and 2019, respectively. The Company’s stock options activity for the six months ended October 31, 2020 was a s follows:
| Directors and Employees | Non- Employees |  |  | Total |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding, April 30, 2020 | 2,228,326 |  | 43,332 |  |  |  | 2,271,658 |  |  | $ | 3.23 |  |  | 5.0 |  | $ | 10,663,000 |
Granted | 60,000 |  | — |  |  |  | 60,000 |  |  | 7.29 |  |  | 9.84 |  |
Exercised | (640,657) |  | (1,160) |  |  |  | (641,817) |  |  | 2.24 |  |  |  |  |
Forfeited | (5,500) |  | — |  |  |  | (5,500) |  |  | 6.76 |  |  |  |  |
Canceled | (26,106) |  | (923) |  |  |  | (27,029) |  |  | 4.00 |  |  |  |  |
Expired | — |  | (5,834) |  |  |  | (5,834) |  |  | 10.80 |  |  |  |  |
Outstanding, October 31, 2020 | 1,616,063 |  | 35,415 |  |  |  | 1,651,478 |  |  | 3.71 |  |  | 5.83 |  | $ | 8,641,000 |
Vested and expected to vest as of October 31, 2020 | 1,616,063 |  | 35,415 |  |  |  | 1,651,478 |  |  | 3.71 |  |  | 5.83 |  | $ | 8,641,000 |
Exercisable as of October 31, 2020 | 1,303,396 |  | 9,584 |  |  |  | 1,312,980 |  |  | 3.15 |  |  | 5.12 |  | $ | 7,660,000 |

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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