Annual report pursuant to Section 13 and 15(d)

Share Capital - Summary of Assumptions Used To Record Fair Value of Warrants (Detail)

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Share Capital - Summary of Assumptions Used To Record Fair Value of Warrants (Detail)
Dec. 31, 2021
yr
Dec. 31, 2020
yr
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input 77.97  
Risk-free interest rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input   0.6
Expected dividend yield    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input   0.0
Expected voltility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input   85.0
Expected life    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input   7
Warrants [Member] | Risk-free interest rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input 0.9 0.2
Warrants [Member] | Expected dividend yield    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input 0.0 0.0
Warrants [Member] | Expected voltility | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input 297.1 251.1
Warrants [Member] | Expected voltility | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input 93.7 148.0
Warrants [Member] | Expected life    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Warrants and rights outstanding, measurement input 0.9 0.9