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Income Taxes - Summary of Principle Components of Deferred Tax Assets (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥)
--- | --- | --- | ---
Components of Deferred Tax Assets [Abstract] |  |  |
Accruals and reserves | ¥ 35,942 | $ 4,924 | ¥ 34,972
Net operating loss carried forward | 228,450 | 31,298 | 217,850
Depreciation and amortization | 1,460 | 200 | 476
Excessive education fee | 521 | 71 | 556
Capitalized research and development expense | 20,048 | 2,747 | 20,513
Research and development expense recognition | 295,499 | 40,483 | 258,008
Deferred revenue recognition | 1,993 | 273 | 775
Excessive donation expense carried forward | 1,943 | 266 | 1,881
Impairment loss on fixed asset and intangible asset | 8,884 | 1,216 | 0
Operating lease liabilities | 13,195 | 1,808 | 3,113
Fair value change on financial assets | 1,330 | 182 | 0
Gross deferred tax assets | 609,265 | 83,468 | 538,144
Less: Valuation allowance | (595,868) | (81,633) | (535,363)
Total deferred tax assets | 13,397 | 1,835 | 2,781
Deferred tax liabilities: |  |  |
Operating right-of-use assets | (13,397) | (1,835) | (2,781)
Total deferred tax liabilities | (13,397) | (1,835) | (2,781)
Net deferred tax assets | ¥ 0 | $ 0 | ¥ 0

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