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Principal Accounting Policies - Schedule Of Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation (Detail) - Available for sale debt securities [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Fair value of Level 3 investments as at December 31, 2022 $ 4,309
Interest income and change in fair value of the investments 1,491
Impairment (Note 11) (1,230)
Derecognition (Note 11) (4,570)
Fair value of Level 3 investments as at December 31, 2023 and 2024 $ 0