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Cash Flow Information - Summary of Reconciliation of Liabilities Arising from Financing Activities (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]    
Balance at January 1 $ 14,184 $ 24,904
Recognized on adoption of IFRS 16   2,651
Changes in cash flows 1,283 (14,888)
Foreign exchange adjustments 604 1,033
Acquisition lease 38 476
Other changes 6 8
Balance at December 31 16,115 14,184
Interest-bearing loans and borrowings [Member]    
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]    
Balance at January 1 11,356 24,814
Recognized on adoption of IFRS 16  
Changes in cash flows 1,869 (14,462)
Foreign exchange adjustments 556 1,004
Acquisition lease
Other changes
Balance at December 31 13,781 11,356
Lease liabilities [Member]    
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]    
Balance at January 1 2,828 90
Recognized on adoption of IFRS 16   2,651
Changes in cash flows (586) (426)
Foreign exchange adjustments 48 29
Acquisition lease 38 476
Other changes 6 8
Balance at December 31 $ 2,334 $ 2,828