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Related Parties - Additional Information (Detail) - ATR [Member]
¥ in Thousands, $ in Thousands
9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2023
CNY (¥)
Sep. 30, 2022
USD ($)
Sep. 30, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Related Party Transaction [Line Items]          
Effective interest rate 4.35%   5.00% 5.00%  
Interest paid $ 5 ¥ 35 $ 943 ¥ 6,241  
Accrued interest $ 0       $ 0
Minimum [Member]          
Related Party Transaction [Line Items]          
Interest accrual period 3 years 3 years      
Maximum [Member]          
Related Party Transaction [Line Items]          
Interest accrual period 5 years 5 years