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Related Party Disclosures - Compensation of Key Management Personnel (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 transactions between related parties [abstract]        
Short-term employee benefits ¥ 25,289 $ 4,000 ¥ 43,178 ¥ 41,606
Contribution to defined contribution plans 273 43 292 362
Total ¥ 25,562 $ 4,043 ¥ 43,470 ¥ 41,968