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New Standards And Interpretations - Summary of Reconciliation of IAS 17 Non-cancelled Operating Lease Commitment to IFRS 16 Lease Liability (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Disclosure Of Reconciliation Of I A S17 Noncancelled Operating Lease Liability [Abstract]      
Operating lease commitments disclosed as at December 31, 2018     $ 3,263
Add: finance lease liabilities recognized as at December 31, 2018   $ 2,788 $ 90
Discounted using the incremental borrowing rate at January 1, 2019 $ (380)    
Short-term leases (169)    
Leases of low-value assets (16)    
Lease liabilities recognized as at January 1, 2019 $ 2,788