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Current and deferred tax - Summary of Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Deferred Tax Assets [Line Items]      
Deferred tax assets $ 12,572 $ 2,174 $ 1,331
Loss Allowances For Financial Assets [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets 75 124  
Bonus Provision [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets 750 655  
Lease [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets 366 108  
Share-based compensation [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets 3,224 185  
Hyperinflationary Adjustments [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets 89 99  
Tax Loss [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets 6,445 427  
Others [Member]      
Deferred Tax Assets [Line Items]      
Deferred tax assets $ 1,623 $ 576