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Intangible Assets - Summary Of Intangible Assets (Detail)
¥ in Thousands, $ in Thousands
Sep. 30, 2020
CNY (¥)
Sep. 30, 2020
USD ($)
Dec. 31, 2019
CNY (¥)
Finite-Lived Intangible Assets [Line Items]      
Net book value ¥ 122,000 $ 17,969 ¥ 148,844
IPR&D [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets ¥ 122,000 $ 17,969 ¥ 148,844