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Related Party Transactions - Disclosure Of Directors And Other Key Management Personnel (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of transactions between related parties [abstract]    
Salaries, directors' fees and other short-term benefits $ 6,763 $ 2,762
Share-based payments 3,385 1,940
Total key management personnel compensation $ 10,148 $ 4,702