XML 149 R117.htm IDEA: XBRL DOCUMENT v3.22.1
Taxation - Schedule of Movement of Valuation Allowance (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Taxation      
Beginning balance $ 40,924 $ 34,257 $ 34,257
Additions (3,507) (4,704) (13,180)
Exchange difference (1,149) (1,963) (896)
Ending balance $ 45,580 $ 40,924 $ 34,257