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Reserves - Summary of Statutory Reserves (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Disclosure of reserves within equity [line items]      
Beginning balance ¥ 309,237    
Ending balance 335,735 $ 48,294 ¥ 309,237
Statutory general reserve [member]      
Disclosure of reserves within equity [line items]      
Beginning balance 283,531 40,785 281,459
Transfer from retained earnings 26,498 3,811 2,072
Ending balance 310,029 44,596 283,531
General surplus reserve [member]      
Disclosure of reserves within equity [line items]      
Beginning balance 25,706    
Ending balance 25,706 3,698 25,706
Capital reserves [member]      
Disclosure of reserves within equity [line items]      
Beginning balance 30,704 4,416 30,704
Issuance of put option to non-controlling interest of subsidiary (34,900) (5,020) 0
Ending balance ¥ (4,196) $ (604) ¥ 30,704