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Warrant Liability - Summary of Weighted Average Inputs to the Models Used for the Fair Value of Warrants Granted (Detail) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Disclosure of classes of share capital [line items]    
Expected volatility 96.00%  
Risk-free interest rate 1.79%  
Warrant liability [member]    
Disclosure of classes of share capital [line items]    
Expected volatility 116.00% 75.00%
Risk-free interest rate 2.40% 0.90%
Expected life of share options (years) 1 year 1 year 6 months
Market price of ADS($) $ 1.12 $ 1.6
Model used Black-Scholes Black-Scholes