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Restricted Net Assets - Additional Information (Detail) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2014 CNY	Dec. 31, 2014 Foreign Tax Authority [Member]	Dec. 31, 2014 Domestic Tax Authority [Member]
Restricted Net Assets [Line Items]
Percentage of after-tax profit to general reserve			10.00%ccm_MinimumPercentageOfAfterTaxProfitForGeneralReserve / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	10.00%ccm_MinimumPercentageOfAfterTaxProfitForGeneralReserve / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember
Percentage of general reserve registered capital			50.00%ccm_MaximumPercentageOfGeneralReserveRegisteredCapital / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	50.00%ccm_MaximumPercentageOfGeneralReserveRegisteredCapital / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember
Percentage of annual appropriations after-tax income	10.00%ccm_PercentageOfProfitAfterTaxForAppropriationToGeneralReserve	10.00%ccm_PercentageOfProfitAfterTaxForAppropriationToGeneralReserve
Amount of net assets restricted	$ 298,345us-gaap_RetainedEarningsAppropriated	1,851,112us-gaap_RetainedEarningsAppropriated

X

- Definition

Maximum Percentage Of General Reserve Registered Capital

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- Definition

Minimum Percentage Of After Tax Profit For General Reserve

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- Definition

Percentage Of Profit After Tax For Appropriation To General Reserve

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- Definition

A segregation of retained earnings which is unavailable for dividend distribution. Includes also retained earnings appropriated for loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 31

-Article 5



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 210.5-02.30(a)(3)(i))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6403732&loc=d3e21332-112643



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.23(4))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6403732&loc=d3e21346-112643



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 24

-Subparagraph a(4)

-Article 7

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