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Financial instruments-Risk management and fair value - Risk Management and Fair Value - Movement in Allowance for Impairment for Short and Long-term Investments at Amortized Cost (Detail) - Allowance for impairment - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Balance at beginning of year $ (2,258) $ (2,955)
(Additions) / Reversal 1,155 697
Balance at end of year $ (1,103) $ (2,258)