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Property, Plant and Equipment - 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 (¥)
Disclosure of detailed information about property, plant and equipment [abstract]        
Impairment loss ¥ 7,227 $ 1,143 ¥ 3,920 ¥ 3,950