Fair Value Measurements - Fair Value of Share-based Compensation Liabilities (Details) - Stock options	Sep. 30, 2021
Expected common share price volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Share-based compensation liabilities, measurement input	487
Expected risk free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Share-based compensation liabilities, measurement input	0.40
Expected term, in years
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Share-based compensation liabilities, measurement input	300
Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Share-based compensation liabilities, measurement input	0