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Financial Risk Management Objectives and Policies - Foreign Currency Risk Sensitivity Analysis Assuming 10% Strengthening of Major Currencies against Functional Currency (Detail) - Foreign currency risk [Member] ¥ in Thousands, $ in Thousands | Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
--- | --- | --- | ---
Singapore dollar [Member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Effect on profit before tax | ¥ 18,081 | $ 2,794 | ¥ 21,564
Euro [Member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Effect on profit before tax | 310 | 48 | (2,746)
USD [Member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Effect on profit before tax | 3,526 | 545 | (13,126)
Renminbi [Member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Effect on profit before tax | ¥ (216) | $ (33) | ¥ 65

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- Definition Increase (decrease) in risk exposure associated with instruments sharing characteristic. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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