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Related Party Disclosures - Additional Information (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 CNY (¥) shares | Dec. 31, 2017 USD ($) shares | Dec. 31, 2016 CNY (¥) shares | Dec. 31, 2015 CNY (¥)
Hong Leong Asia Limited [Member] | Subsidiaries [Member] |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |
Ownership interest in the entity, percentage | 40.00% | 40.00% | 40.20% |
Ownership interest in the entity, shares | 16,360,845 | 16,360,845 | 16,360,845 |
Number of special shares held, entitles to elect majority of board of directors | 1 | 1 | 1 |
Consultancy fees charged | ¥ 34 | $ 5 | ¥ 34 | ¥ 32
HL Technology Systems Private Limited [Member] | Subsidiaries [Member] |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |
Ownership interest held by controlling shareholder, percent | 23.30% | 23.30% | 23.40% |
Well Summit Investments Limited [Member] | Subsidiaries [Member] |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |
Ownership interest held by controlling shareholder, percent | 16.70% | 16.70% | 16.80% |
Yulin City Government [Member] |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |
Ownership interest held by non-controlling shareholder with significant influence over the Group | 17.20% | 17.20% | 17.30% |

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- Definition Total percentage of share in the Entity held by controlling shareholder through its subsidiaries. + References No definition available. + Details
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- Definition Percentage of share in the Entity held by controlling shareholders through its subsidiaries. + References No definition available. + Details
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- Definition Percentage of share in the entity held by non-controlling shareholder with significant influence over the group. + References No definition available. + Details
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- Definition The number of shares in the Entity held by controlling shareholder through its subsidiaries. + 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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- Details
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- Details
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- Details
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- Details
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- Details
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