Cash consideration paid to acquire equity interests of investee.

No definition available.

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- Definition

Convertible loans converted to acquire equity interests of investee.

+ References

No definition available.

+ Details

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- Definition

Percentage of equity interests entities acquired.

+ References

No definition available.

+ Details

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- Definition

Percentage of equity interests of investee owned by entities on an as-if converted basis.

+ References

No definition available.

+ Details

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- Definition

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580

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- Definition

Equity securities categorized neither as held-to-maturity nor trading which are intended be sold more than one year from the balance sheet date or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Available-for-sale Investments (Details) ¥ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2014 CNY (¥)	Dec. 31, 2016 USD ($)	Apr. 30, 2015 CNY (¥)	Apr. 30, 2015 USD ($)	Oct. 31, 2014 CNY (¥)	Oct. 31, 2014 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Gain on disposal of ordinary shares and Class A ordinary shares and acquisition of Series C preferred shares			¥ 0	$ 0	¥ 4,643	¥ 0
Fair value of available-for-sale investments	¥ 939,432		¥ 939,432		¥ 513,994		$ 135,306
Particle Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity interests owned by the Company on an as-if converted basis	44.20%		44.20%		46.95%	18.42%	44.20%
Gain on disposal of ordinary shares and Class A ordinary shares and acquisition of Series C preferred shares					¥ 4,600
Total unrealized gains on available-for-sale investments recorded in accumulated other comprehensive income	¥ 303,500		¥ 303,500		56,200		$ 43,700
Fair value of available-for-sale investments	939,400		¥ 939,400		¥ 514,000		$ 135,300
Series B convertible redeemable preferred shares [Member] \| Particle Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity interests acquired on an as-if converted basis										9.34%	9.34%
Cash consideration										¥ 36,800	$ 6,000
Series C convertible redeemable preferred shares [Member] \| Particle Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash consideration								¥ 183,500	$ 30,000
Ordinary shares and Class A ordinary shares [Member] \| Particle Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash consideration								¥ 168,500	$ 27,600
Series D1 convertible redeemable preferred shares [Member] \| Particle Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate amount of converting convertible loans due from related party	¥ 143,800	$ 20,700