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Income Tax Expense - Summary of Deferred Tax (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2023 USD ($)
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax liabilities |  | ¥ (65,089) |  | ¥ (61,825) |  | $ (9,163)
Deferred tax assets |  | 426,377 |  | 450,882 |  | 60,023
Reconciliation of deferred tax (expense) income [member] |  | (39,294) | $ (5,531) | 41,250 | ¥ (16,483) |
Net deferred tax assets |  | 361,288 |  | 389,057 |  | 50,860
Accelerated depreciation [Member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax liabilities |  | (77,806) |  | (122,298) |  | (10,953)
Reconciliation of deferred tax (expense) income [member] |  | 44,492 | 6,263 | 16,472 | (37,968) |
Interest receivable [Member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax liabilities |  | 0 |  | (3,033) |  | 0
Reconciliation of deferred tax (expense) income [member] |  | 3,033 | 427 | 363 | (1,459) |
PRC withholding tax on dividend income [Member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax liabilities | [1] | (64,717) |  | (61,825) |  | (9,110)
Reconciliation of deferred tax (expense) income [member] | [1] | (14,457) | (2,035) | (11,458) | (14,529) |
Effect of change in residual value and impairment of property, plant and equipment [member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax assets |  | 2,866 |  | 69,641 |  | 404
Reconciliation of deferred tax (expense) income [member] |  | (66,774) | (9,400) | 4,273 | 25,264 |
Write-down of inventories [member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax assets |  | 37,120 |  | 29,503 |  | 5,226
Reconciliation of deferred tax (expense) income [member] |  | 7,617 | 1,072 | 9,253 | (2,378) |
Impairment losses on trade receivables [member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax assets |  | 7,426 |  | 7,071 |  | 1,045
Reconciliation of deferred tax (expense) income [member] |  | 355 | 50 | 282 | (1,267) |
Accruals [member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax assets |  | 232,048 |  | 234,586 |  | 32,666
Reconciliation of deferred tax (expense) income [member] |  | (2,505) | (352) | (48,841) | (15,339) |
Deferred income [Member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax assets |  | 79,896 |  | 56,480 |  | 11,247
Reconciliation of deferred tax (expense) income [member] |  | 23,416 | 3,296 | (41,348) | (11,114) |
Others [Member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Deferred tax assets |  | 31,854 |  | 39,185 |  | 4,484
Reconciliation of deferred tax (expense) income [member] |  | (7,325) | (1,031) | (4,421) | 19,235 |
Losses available for offsetting against future taxable income [member] |  |  |  |  |  |
Disclosure of deferred tax assets and liabilities [Line Items] |  |  |  |  |  |
Reconciliation of deferred tax (expense) income [member] |  | (27,146) | $ (3,821) | 116,675 | ¥ 23,072 |
Net deferred tax assets |  | ¥ 112,601 |  | ¥ 139,747 |  | $ 15,851
[1] | The movement of PRC withholding tax on dividend income is as follows:

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