Stockholders’ Equity - Key Valuation Inputs (Details)	Aug. 31, 2021	May 31, 2020	Feb. 19, 2020
Class B Warrant
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected term (years)			3 years
Class B Warrant | Dividend yield | Black-Scholes Model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant measurement input			0
Class B Warrant | Risk-free interest rate | Black-Scholes Model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant measurement input			0.0139
Class B Warrant | Expected volatility | Black-Scholes Model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant measurement input			0.4000
Class C Warrant
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected term (years)	3 years 21 days	4 years 4 months 6 days
Class C Warrant | Dividend yield | Black-Scholes Model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant measurement input	0	0
Class C Warrant | Risk-free interest rate | Black-Scholes Model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant measurement input	0.0041	0.0033
Class C Warrant | Expected volatility | Black-Scholes Model
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant measurement input	0.4500	0.5000