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Deferred Grants - Additional Information (Detail)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Statement 1 [Line Items]        
Revenue From Government Grants ¥ 152,932 $ 24,190 ¥ 209,793 ¥ 122,371
Grant Related to Assets [Member]        
Statement 1 [Line Items]        
Revenue From Government Grants 247,900 32,900 271,600  
JSS Grant [Member]        
Statement 1 [Line Items]        
Revenue From Government Grants ¥ 300 $ 100 ¥ 1,100