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Summary of Significant Principal Accounting Policies (Schedule of Concentration and Risks) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016 CNY (¥)		Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥)		Dec. 31, 2014 CNY (¥)	Dec. 31, 2016 USD ($)
Concentration Risk [Line Items]
Accounts receivable, net	¥ 624,817			¥ 364,782			$ 89,993
Cost of products	1,921,856		$ 276,805	1,735,820		¥ 1,086,133
Accounts Receivable [Member] | Customer [Member] | Customer A [Member]
Concentration Risk [Line Items]
Accounts receivable, net	193,775			77,764
Cost of Products [Member] | Supplier [Member] | B [Member]
Concentration Risk [Line Items]
Cost of products	629,780			257,069
Cost of Products [Member] | Supplier [Member] | C [Member]
Concentration Risk [Line Items]
Cost of products	551,459			317,576
Cost of Products [Member] | Supplier [Member] | D [Member]
Concentration Risk [Line Items]
Cost of products		[1]		245,427
Sales Revenue, Net [Member] | Customer [Member] | Customer A [Member]
Concentration Risk [Line Items]
Accounts receivable, net	¥ 351,204				[1]
[1] Not more than 10% or more.

X

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

No definition available.

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Total costs related to goods produced and sold during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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