XML 138 R124.htm IDEA: XBRL DOCUMENT v3.19.1
Intangible Assets - Summary of Intangible Assets (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Disclosure of detailed information about intangible assets [line items]      
Beginning balance   ¥ 10,122 [1] ¥ 50,122
Ending balance $ 30,792 206,001 10,122 [1]
Technology know how [member]      
Disclosure of detailed information about intangible assets [line items]      
Ending balance 1,513 10,122  
Intangible assets under development [member]      
Disclosure of detailed information about intangible assets [line items]      
Beginning balance   10,122 50,122
Ending balance $ 29,279 195,879 10,122
Cost [member]      
Disclosure of detailed information about intangible assets [line items]      
Beginning balance   136,822 136,822
Addition   195,879  
Ending balance   332,701 136,822
Cost [member] | Technology know how [member]      
Disclosure of detailed information about intangible assets [line items]      
Transfer   136,822  
Ending balance   136,822  
Cost [member] | Intangible assets under development [member]      
Disclosure of detailed information about intangible assets [line items]      
Beginning balance   136,822 136,822
Addition   195,879  
Transfer   (136,822)  
Ending balance   195,879 136,822
Accumulated impairment [member]      
Disclosure of detailed information about intangible assets [line items]      
Beginning balance   126,700 86,700
Charge to consolidated statement of profit or loss     40,000
Ending balance   126,700 126,700
Accumulated impairment [member] | Technology know how [member]      
Disclosure of detailed information about intangible assets [line items]      
Transfer   126,700  
Ending balance   126,700  
Accumulated impairment [member] | Intangible assets under development [member]      
Disclosure of detailed information about intangible assets [line items]      
Beginning balance   126,700 86,700
Charge to consolidated statement of profit or loss     40,000
Transfer   ¥ (126,700)  
Ending balance     ¥ 126,700
[1] Restated