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Trade and Other Receivables - Movement in the Loss Allowance on Trade Receivables (Detail) - Trade receivables [member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of financial assets [Line Items]    
Beginning balance $ 1,414 $ 1,550
Charge for the year 383 227
Write-off (734) (339)
Unused amounts reversed (170) (147)
Currency translation adjustment (65) 102
Reclassification 13 21
Ending balance $ 841 $ 1,414