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Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.20.4
Subsequent Events (Details) - USD ($)
3 Months Ended 9 Months Ended
Feb. 26, 2021
Jan. 31, 2021
Jan. 31, 2021
Apr. 30, 2020
Jan. 31, 2020
Subsequent Event [Line Items] Ìý Ìý Ìý Ìý Ìý
Vesting of outstanding shares Ìý 1,260,213 1,260,213 Ìý 2,776,778
Stock Incentive Plan and Stock Option Grants to Employees and Directors Ìý Ìý Ìý Ìý Ìý
Subsequent Event [Line Items] Ìý Ìý Ìý Ìý Ìý
Vesting of outstanding shares Ìý Ìý Ìý 2,740,539 Ìý
Weighted-average exercise price of unvested shares (in dollars per share) Ìý $ 6.13 $ 6.13 $ 4.62 Ìý
Restricted Stock Units (RSUs) Ìý Ìý Ìý Ìý Ìý
Subsequent Event [Line Items] Ìý Ìý Ìý Ìý Ìý
Vested (in shares) Ìý 131,250 206,109 Ìý Ìý
Subsequent Event | Former CFO Ìý Ìý Ìý Ìý Ìý
Subsequent Event [Line Items] Ìý Ìý Ìý Ìý Ìý
Severance benefits $ 150,000 Ìý Ìý Ìý Ìý
Bonus for prior fiscal year 18,563 Ìý Ìý Ìý Ìý
Bonus for current fiscal year 33,750 Ìý Ìý Ìý Ìý
Relocation costs reimbursement $ 96,250 Ìý Ìý Ìý Ìý
Subsequent Event | Former CFO | Stock Incentive Plan and Stock Option Grants to Employees and Directors Ìý Ìý Ìý Ìý Ìý
Subsequent Event [Line Items] Ìý Ìý Ìý Ìý Ìý
Vesting of outstanding shares 13,892 Ìý Ìý Ìý Ìý
Weighted-average exercise price of unvested shares (in dollars per share) $ 5.12 Ìý Ìý Ìý Ìý
Subsequent Event | Former CFO | Restricted Stock Units (RSUs) Ìý Ìý Ìý Ìý Ìý
Subsequent Event [Line Items] Ìý Ìý Ìý Ìý Ìý
Vested (in shares) 80,251 Ìý Ìý Ìý Ìý