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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, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance ¥ 298,445 $ 41,601 ¥ 342,141 $ 47,693
Addition 55,348 7,715 32,084 4,472
Depreciation (50,461) (7,034) (46,071) (6,422)
Disposal of subsidiary     (22,782) 3,176
Disposal     (5,564) 776
Termination (1,353) (188) (1,382) 193
Translation difference 34 5 19 3
Ending balance 302,013 $ 42,099 298,445 $ 41,601
Leasehold land [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 248,437   289,065  
Addition 0   0  
Depreciation (11,371)   (12,282)  
Disposal of subsidiary     (22,782)  
Disposal     (5,564)  
Termination 0   0  
Translation difference 0   0  
Ending balance 237,066   248,437  
Building and office space [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 48,786   52,739  
Addition 55,196   31,082  
Depreciation (38,963)   (33,671)  
Disposal of subsidiary     0  
Disposal     0  
Termination (1,353)   (1,382)  
Translation difference 34   18  
Ending balance 63,700   48,786  
Office Furniture, Fittings and Equipment [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 36   42  
Addition 0   0  
Depreciation (7)   (7)  
Disposal of subsidiary     0  
Disposal     0  
Termination 0   0  
Translation difference 0   1  
Ending balance 29   36  
Motor vehicles [member]        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance 1,186   295  
Addition 152   1,002  
Depreciation (120)   (111)  
Disposal of subsidiary     0  
Disposal     0  
Termination 0   0  
Translation difference 0   0  
Ending balance ¥ 1,218   ¥ 1,186