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Financial instruments and risks - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Financial Instruments [Line Items]        
Cash and cash equivalents $ 123,251 $ 161,305 $ 192,962 $ 74,625
Cash And Cash Equivalents, Term Deposits and Short-term Investments        
Disclosure Of Financial Instruments [Line Items]        
Maximum exposure to credit risk $ 43,700 $ 57,300