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Share-Based Compensation - Summary of Share-Based Compensation Expenses (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | ¥ 155,622 | $ 21,320 | ¥ 260,719 | ¥ 326,784
Cost of Revenues [Member] |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 1,869 | 256 | 2,313 | 1,783
Research and Development Expenses [Member] |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 30,677 | 4,203 | 53,474 | 52,873
Selling and Marketing Expenses [Member] |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 5,010 | 686 | 9,658 | 8,525
General and Administrative Expenses [Member] |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | ¥ 118,066 | $ 16,175 | ¥ 195,274 | ¥ 263,603

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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