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Share-based Compensation - Summary of Share-Based Compensation (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥)
Employee Service Allocated Share Based Compensation Expense [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | ¥ 37,359 | $ 5,862 | ¥ 50,741 | ¥ 0
Cost of revenues [Member] |  |  |  |
Employee Service Allocated Share Based Compensation Expense [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 11,484 | 1,802 | 14,789 | 0
Selling and marketing expenses [Member] |  |  |  |
Employee Service Allocated Share Based Compensation Expense [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 3,431 | 538 | 2,370 | 0
General and administrative expenses [Member] |  |  |  |
Employee Service Allocated Share Based Compensation Expense [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 12,496 | 1,961 | 16,128 | 0
Research and development expenses [Member] |  |  |  |
Employee Service Allocated Share Based Compensation Expense [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | ¥ 9,948 | $ 1,561 | ¥ 17,454 | ¥ 0

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