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v2.4.1.9

Movement in Allowance for Doubtful Accounts (Detail) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY | Dec. 31, 2013 CNY | Dec. 31, 2012 CNY
Allowance for Doubtful Accounts |  |  |  |
Balance as of January 1 | $ 7,062 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 43,814 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 5,768 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 5,806 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Amounts (credited against) charged to expenses | 8,068 us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease | 50,063 us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease | 38,046 us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease | (38)us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Balance as of December 31 | $ 15,130 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 93,877 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 43,814 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 5,768 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent

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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Amount of increase (decrease) in the allowance for doubtful accounts. + References No definition available. + Details
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Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration