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START-UP COSTS (Details) - CNY (¥) ¥ in Thousands | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016
General and administrative expenses |  |
Start-up costs incurred prior to operating a new data center | ¥ 6,809 | ¥ 9,596

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- Definition Amount of start-up costs incurred prior to operating a new center. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |