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Cash and Bank Balances - Additional Information (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 CNY (¥) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2017 USD ($)
Disclosure Of Detailed Cash and Cash Equivalents Short Term Bank Deposits Current Restricted Cash and Long Term Bank Deposits [Line Items] |  |  |  |  |
Restricted cash used as collateral by the banks for the issuance of bills to suppliers | ¥ 45,288 |  | ¥ 36,000 |  | $ 7,155
Restricted money relates to retention money deposited in a joint signatory account with the buyer of subsidiaries | 9,521 |  |  |  | 1,504
Undrawn borrowing facilities | 474,384 |  | 318,565 |  | $ 74,949
Loan commitment fee incurred | ¥ 179 | $ 28 | ¥ 392 | ¥ 368 |
Bottom of range [Member] |  |  |  |  |
Disclosure Of Detailed Cash and Cash Equivalents Short Term Bank Deposits Current Restricted Cash and Long Term Bank Deposits [Line Items] |  |  |  |  |
Interest rate on bank deposits | 0.87% |  | 0.86% |  | 0.87%
Top of range [Member] |  |  |  |  |
Disclosure Of Detailed Cash and Cash Equivalents Short Term Bank Deposits Current Restricted Cash and Long Term Bank Deposits [Line Items] |  |  |  |  |
Interest rate on bank deposits | 3.28% |  | 2.10% |  | 3.28%

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- Definition Disclosure Of Detailed Cash and Cash Equivalents Short Term Bank Deposits Current Restricted Cash and Long Term Bank Deposits [Line Items]. + References No definition available. + Details
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- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2016-01-13 -Paragraph 50 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2016-03-30&anchor=para_50_a&doctype=Standard -URIDate 2016-03-31 + Details
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