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Investments (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) entity	Dec. 31, 2015 CNY (¥) entity	Dec. 31, 2014 CNY (¥)	Dec. 31, 2013 CNY (¥)	Sep. 30, 2015 CNY (¥)
Investments [Line Items]
Number of companies whose stock is acquired by the entity under the agreement | entity	16	16
Consideration to acquire minority stake	$ 54,309	¥ 351,800	¥ 73,402	¥ 47,110
Equity interest in an investee company (as a percent)					4.25%
Original investment | ¥					¥ 6,117
Impairment charge	$ 926	¥ 6,000	¥ 4,000

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- Definition

Original amount of cost-method investments at the acquisition date.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

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- Definition

Represents the percentage of equity interest in a private entity.

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- Definition

Represents the number of entities whose preferred stock is acquired by the entity under the agreement.

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- Definition

The cash outflow associated with the purchase of or advances to cost method investments.

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