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Income Tax Expense - Summary of Deferred Tax (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2022
USD ($)
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax liabilities ¥ (61,825)   ¥ (65,544)   $ (8,893)
Deferred tax assets 450,882   398,174   64,857
Reconciliation of deferred tax (expense) income [member] 41,250 $ 5,933 (16,483) ¥ (12,408)  
Net deferred tax assets 389,057   332,630   55,964
Accelerated depreciation [Member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax liabilities (122,298)   (138,770)   (17,592)
Reconciliation of deferred tax (expense) income [member] 16,472 2,369 (37,968) (55,882)  
Interest receivable [Member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax liabilities (3,033)   (3,396)   (436)
Reconciliation of deferred tax (expense) income [member] 363 52 (1,459) (293)  
PRC withholding tax on dividend income [Member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax liabilities [1] (61,825)   (65,544)   (8,893)
Reconciliation of deferred tax (expense) income [member] [1] (11,458) (1,648) (14,529) (36,255)  
Write-down of inventories [member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax assets 29,503   20,250   4,244
Reconciliation of deferred tax (expense) income [member] 9,253 1,331 (2,378) 4,225  
Impairment losses on trade receivables          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax assets 7,071   6,789   1,017
Reconciliation of deferred tax (expense) income [member] 282 41 (1,267) (2,021)  
Accruals [member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax assets 234,586   283,427   33,744
Reconciliation of deferred tax (expense) income [member] (48,841) (7,026) (15,339) 48,149  
Deferred income [Member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax assets 56,480   97,828   8,124
Reconciliation of deferred tax (expense) income [member] (41,348) (5,948) (11,114) 1,211  
Others [Member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax assets 39,185   43,606   5,636
Reconciliation of deferred tax (expense) income [member] (4,421) (636) 19,235 (4,998)  
Losses available for offsetting against future taxable income          
Disclosure of deferred tax assets and liabilities [Line Items]          
Reconciliation of deferred tax (expense) income [member] 116,675 16,783 23,072 0  
Net deferred tax assets 139,747   23,072   20,102
Effect of change in residual value an impairment of property, plant and equipment [Member]          
Disclosure of deferred tax assets and liabilities [Line Items]          
Deferred tax assets 69,641   65,368   $ 10,018
Reconciliation of deferred tax (expense) income [member] ¥ 4,273 $ 615 ¥ 25,264 ¥ 33,456  
[1] The movement of PRC withholding tax on dividend income is as follows: