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Income tax (Schedule of Net Operating Tax Loss Carry Forwards) (Details) ¥ in Thousands | Dec. 31, 2016 CNY (¥)
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Net operating tax loss carry forwards [Line Items] |
Operating tax loss carry forwards | ¥ 295,238
2017 [Member] |
Net operating tax loss carry forwards [Line Items] |
Operating tax loss carry forwards |
2018 [Member] |
Net operating tax loss carry forwards [Line Items] |
Operating tax loss carry forwards | 9,428
2019 [Member] |
Net operating tax loss carry forwards [Line Items] |
Operating tax loss carry forwards | 28,373
2020 [Member] |
Net operating tax loss carry forwards [Line Items] |
Operating tax loss carry forwards | 78,713
2021 [Member] |
Net operating tax loss carry forwards [Line Items] |
Operating tax loss carry forwards | ¥ 178,724

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 + Details
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