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Income Tax (Credit) / Expense - Reconciliation of income tax expenses and profit before tax at statutory tax rate (Parenthetical) (Detail)
 12 Months Ended
Mar. 28, 2018
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
HK [Member]          
Reconciliation Of Income Tax Expenses And Profit Before Tax At Statutory Tax Rate [Line Items]          
Applicable tax rate 16.50% 16.50% 16.50% 16.50% 16.50%