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Dividends Declared and Paid - Summary of Dividends Declared and Paid (Detail) ¥ in Thousands, $ in Thousands |  |  | 12 Months Ended
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Jul. 13, 2017 CNY (¥) | Jul. 13, 2017 USD ($) | Jun. 29, 2016 CNY (¥) | Jun. 29, 2016 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥)
Disclosure of dividends declared and paid on ordinary capital [Abstract] |  |  |  |  |  |  |  |
Dividend paid in cash |  | $ 34,700 |  | $ 17,800 | ¥ 235,947 | $ 37,278 | ¥ 118,193 |
Dividend paid in shares (Note 24) | ¥ 12,897 | $ 2,038 | ¥ 103,356 |  | 12,897 | 2,038 | 103,356 |
Dividends on ordinary shares |  |  |  |  | ¥ 248,844 | $ 39,316 | ¥ 221,549 | ¥ 257,500

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- Definition The amount of dividends paid by the entity on ordinary shares. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2016-01-13 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2016-03-30&anchor=para_16A_f&doctype=Standard -URIDate 2016-03-31 + Details
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