Registration statement for securities of certain foreign private issuers

Share-based payments - Summary of Input Parameters Discount for Lack of Marketability (Detail)

v3.22.1
Share-based payments - Summary of Input Parameters Discount for Lack of Marketability (Detail)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Indirect Measurement Of Fair Value Of Goods Or Services Received Other Equity Instruments Granted During The Period [Line Items]    
Expected life 6 months  
Expected volatility 58.60%  
Expected dividend yield 0.00% 0.00%
Bottom of range [member]    
Disclosure Of Indirect Measurement Of Fair Value Of Goods Or Services Received Other Equity Instruments Granted During The Period [Line Items]    
Expected life   6 months
Expected volatility   74.10%
Top of range [member]    
Disclosure Of Indirect Measurement Of Fair Value Of Goods Or Services Received Other Equity Instruments Granted During The Period [Line Items]    
Expected life   3 years
Expected volatility   78.40%