Leases - Additional Information (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Jan. 31, 2023 |
Jan. 31, 2022 |
Jan. 31, 2023 |
Jan. 31, 2022 |
Apr. 30, 2022 |
Apr. 30, 2021 |
|
| Lessee Disclosure [Abstract] | ||||||
| Rent expense | $ 45,099 | $ 49,422 | $ 130,663 | $ 139,151 | $ 179,364 | $ 173,405 |
| Operating lease incremental borrowing rate | 12.00% | 12.00% | 12.00% | |||