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Investment Property - Summary of Investment Property (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Disclosure of detailed information about investment property [line items]        
Beginning balance ¥ 5,086      
Charge for the year 348 $ 50 ¥ 355 ¥ 376
Ending balance 4,756 684 5,086  
Consolidated statements of profit or loss:        
Rental income from an investment property 176 25 77  
Direct operating expenses (including repairs, maintenance and depreciation expense) arising from the rental generating property (118) (17) (82)  
Fair value [member]        
Disclosure of detailed information about investment property [line items]        
Beginning balance 11,308      
Ending balance 11,686 1,681 11,308  
Cost [member]        
Disclosure of detailed information about investment property [line items]        
Beginning balance 31,810 4,575 33,187  
Translation difference 579 84 (1,377)  
Ending balance 32,389 4,659 31,810 33,187
Accumulated depreciation, amortization and impairment [member]        
Disclosure of detailed information about investment property [line items]        
Beginning balance (26,724) (3,844) (27,358)  
Charge for the year 348 50 355  
Translation difference 561 81 (989)  
Ending balance ¥ (27,633) $ (3,975) ¥ (26,724) ¥ (27,358)