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Reserves - Summary of Statutory Reserves (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Disclosure of reserves within equity [line items]      
Beginning balance ¥ 381,724    
Ending balance 443,949 $ 61,885 ¥ 381,724
Statutory general reserve [member]      
Disclosure of reserves within equity [line items]      
Beginning balance 356,018 49,628 310,029
Transfer from retained earnings 62,225 8,674 45,989
Ending balance 418,243 58,302 356,018
General surplus reserve [member]      
Disclosure of reserves within equity [line items]      
Beginning balance 25,706 3,583 25,706
Ending balance 25,706 3,583 25,706
Capital reserves [member]      
Disclosure of reserves within equity [line items]      
Beginning balance (18,236) (2,542) (4,196)
Issuance of put option to non-controlling interest of subsidiary 0 0 (14,040)
Ending balance ¥ (18,236) $ (2,542) ¥ (18,236)