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Reserves - Summary of Statutory Reserves (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | ¥ 304,307 |  |
Ending balance | 307,165 | $ 47,466 | ¥ 304,307
Statutory general reserve [member] |  |  |
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | 278,601 | 43,052 | 276,698
Transfer from retained earnings | 2,858 | 442 | 1,903
Ending balance | 281,459 | 43,494 | 278,601
General surplus reserve [member] |  |  |
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | 25,706 |  |
Ending balance | 25,706 | 3,972 | 25,706
Capital reserves [member] |  |  |
Disclosure of reserves within equity [line items] |  |  |
Beginning balance | 30,704 |  |
Ending balance | ¥ 30,704 | $ 4,745 | ¥ 30,704

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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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- Definition The increase (decrease) in equity resulting from transfers to a statutory reserve. [Refer: Statutory reserve] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_106_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition A component of equity representing reserves created based on legal requirements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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