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Investment Properties - Reconciliation of Net Book Value of Investment Properties (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Reconciliation Of Changes In Investment Property [Abstract]    
Net book value at January 1 $ 6,378 $ 730
Addition   5,197
Depreciation (included in administrative expenses) (196) (144)
Transfer from property plant and equipment   7
Exchange difference (373) 588
Net book value at December 31 $ 5,809 $ 6,378