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Leases - Summary of detailed Information About Carrying Amounts of Right-of-use Assets Recognized and Movements During Year (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance ¥ 342,141 $ 48,164 ¥ 344,814 $ 48,541
Addition 32,084 4,517 49,735 7,001
Depreciation expenses (46,071) (6,486) (43,129) (6,071)
Disposal of subsidiary (22,782) (3,207)    
Disposal (5,564) (783) (3,256) (458)
Termination (1,382) (195) (6,187) (871)
Translation difference 19 3 164 22
Ending balance 298,445 $ 42,013 342,141 $ 48,164
Leasehold land [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 289,065   304,645  
Addition 0   0  
Depreciation expenses (12,282)   (12,324)  
Disposal of subsidiary (22,782)      
Disposal (5,564)   (3,256)  
Termination 0   0  
Translation difference 0   0  
Ending balance 248,437   289,065  
Building and office space [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 52,739   40,118  
Addition 31,082   49,421  
Depreciation expenses (33,671)   (30,772)  
Disposal of subsidiary 0      
Disposal 0   0  
Termination (1,382)   (6,187)  
Translation difference 18   159  
Ending balance 48,786   52,739  
Office Furniture, Fittings and Equipment [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 42   51  
Addition 0   0  
Depreciation expenses (7)   (14)  
Disposal of subsidiary 0      
Disposal 0   0  
Termination 0   0  
Translation difference 1   5  
Ending balance 36   42  
Motor vehicles [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 295   0  
Addition 1,002   314  
Depreciation expenses (111)   (19)  
Disposal of subsidiary 0      
Disposal 0   0  
Termination 0   0  
Translation difference 0   0  
Ending balance ¥ 1,186   ¥ 295