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Cash and Cash Equivalents - Additional Information (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2021
USD ($)
Disclosure of detailed cash and cash equivalents short term bank deposits current restricted cash and long term bank deposits [line items]          
Restricted cash used as collateral by the banks for the issuance of bills to suppliers ¥ 76,000   ¥ 171,100   $ 12,000
Undrawn borrowing facilities 474,200   491,900   75,000
Loan commitment fee incurred 0 $ 0 100 ¥ 200  
Fixed deposits held with related party ¥ 140,300   ¥ 130,800   $ 22,200
Bottom of range [member]          
Disclosure of detailed cash and cash equivalents short term bank deposits current restricted cash and long term bank deposits [line items]          
Interest rate on bank deposits 0.13%   0.10%   0.13%
Top of range [member]          
Disclosure of detailed cash and cash equivalents short term bank deposits current restricted cash and long term bank deposits [line items]          
Interest rate on bank deposits 1.55%   1.55%   1.55%