XML 139 R127.htm IDEA: XBRL DOCUMENT v3.22.1
Investments in Associates - Movements in Investments in Associates (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Significant Investments In Associates [Abstract]      
At January 1 $ 930 $ 935  
Share of loss of associates (1) (1) $ (3)
Exchange difference (94) (4)  
At December 31 $ 835 $ 930 $ 935