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Income Tax Expense - Reconciliation of Income Tax Expense (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 (¥)
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Profit before tax | ¥ 620,540 | $ 86,501 | ¥ 571,352 | ¥ 394,726
Income tax expense at 15% | 93,081 | 12,975 | 85,703 | 59,209
Adjustments: |  |  |  |
Non-deductible expenses | 7,807 | 1,088 | 5,888 | 7,924
Tax-exempt income | (16,087) | (2,242) | (11,993) | (500)
Utilization of deferred tax benefits previously not recognized | (8,077) | (1,126) | (6,211) | (3,093)
Recognition of deferred tax benefits not previously recognized | (3,458) | (482) | 0 | 0
Write off deferred tax benefits previously recognized | 105,682 | 14,732 | 0 | 0
Deferred tax benefits not recognized | 72,680 | 10,131 | 42,830 | 22,606
Tax credits for research and development expense | (114,006) | (15,892) | (85,372) | (76,835)
Tax rate differential | (42,633) | (5,943) | 21,542 | 10,901
Under provision in respect of previous years | 17,826 | 2,485 | 81,968 | 27,303
Withholding tax expense | 15,665 | 2,184 | 14,872 | 11,535
Others | 318 | 44 | (731) | 15
Consolidated income tax expense reported in the statement of profit or loss | ¥ 128,798 | $ 17,954 | ¥ 148,496 | ¥ 59,065

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- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to changes in the tax rate. [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2024-03-27 + Details
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