Stockholders' Equity (Deficit) - Summary of significant inputs to the Black-Scholes Option Pricing Model for the fair value of the Warrants (Details) |
Apr. 30, 2022 |
Apr. 30, 2021 |
|---|---|---|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||
| Expected life in years | 5 years | 5 years |
| Risk free interest rate | ||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||
| Warrants and Rights Outstanding, Measurement Input | 1.6 | 2 |
| Expected volatility | ||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||
| Warrants and Rights Outstanding, Measurement Input | 55 | 66.2 |