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Current and deferred tax - Summary of Movement on Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning $ 12,572 $ 2,174
(Charged)/Credited to profit and loss (i) 5,080 10,211
To equity 58 187
Balance Ending 17,710 12,572
Loss Allowances For Financial Assets [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 75 124
(Charged)/Credited to profit and loss (i) 195 (49)
To equity 0 0
Balance Ending 270 75
Bonus Provision [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 750 655
(Charged)/Credited to profit and loss (i) 962 95
To equity 0 0
Balance Ending 1,712 750
Lease [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 366 108
(Charged)/Credited to profit and loss (i) 26 258
To equity 0 0
Balance Ending 392 366
Sharebased compensation (ii) [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 3,224 185
(Charged)/Credited to profit and loss (i) (152) 2,852
To equity 58 187
Balance Ending 3,130 3,224
Hyperinflationary Adjustments [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 89 99
(Charged)/Credited to profit and loss (i) (52) (10)
To equity 0 0
Balance Ending 37 89
Tax Loss (iii) [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 6,445 427
(Charged)/Credited to profit and loss (i) 4,068 6,018
To equity 0 0
Balance Ending 10,513 6,445
Others (iv) Assets [Member]    
Reconciliation Of Changes In Deferred Tax (Asset) [Line Items]    
Balance Beginning 1,623 576
(Charged)/Credited to profit and loss (i) 33 1,047
To equity 0 0
Balance Ending $ 1,656 $ 1,623