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Accounts Receivable - Additional Information (Detail)
In Thousands, unless otherwise specified
Dec. 31, 2014
USD ($)
Dec. 31, 2014
CNY
Dec. 31, 2013
CNY
Receivables [Abstract]      
Accounts receivable used to secure bank borrowings $ 12,303us-gaap_PledgedAssetsNotSeparatelyReportedOtherFinancialInstruments 76,333us-gaap_PledgedAssetsNotSeparatelyReportedOtherFinancialInstruments 49,481us-gaap_PledgedAssetsNotSeparatelyReportedOtherFinancialInstruments
Secured debt $ 22,232us-gaap_SecuredDebtCurrent 137,942us-gaap_SecuredDebtCurrent 136,626us-gaap_SecuredDebtCurrent