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Prepaid Operating Leases - Additional Information (Detail) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 CNY (¥) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 CNY (¥)
Disclosure of detailed information about arrangements involving legal form of lease [Line Items] |  |  |
Prepaid operating leases pledged to secure bank facilities | ¥ 0 | $ 0 | ¥ 71,022,000
Bottom of range [Member] |  |  |
Disclosure of detailed information about arrangements involving legal form of lease [Line Items] |  |  |
Land use rights terms | 15 years |  |
Top of range [Member] |  |  |
Disclosure of detailed information about arrangements involving legal form of lease [Line Items] |  |  |
Land use rights terms | 50 years |  |

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- Definition Land use rights operating lease terms. + References No definition available. + Details
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- Definition Prepaid operating leases pledged as security. + 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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