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Fair value measurements (Summary of Liabilities Measured at Fair Value on Recurring Basis) (Details) - Recurring [Member] - CNY (¥) ¥ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Liabilities
Contingent consideration in relation to a business acquisition		¥ 183,000
Level 1 [Member]
Liabilities
Contingent consideration in relation to a business acquisition
Level 2 [Member]
Liabilities
Contingent consideration in relation to a business acquisition
Level 3 [Member]
Liabilities
Contingent consideration in relation to a business acquisition		¥ 183,000

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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- References

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