Summary Of Significant Accounting Policies Variable Interest Entity (Details)	May 15, 2010
Minimum duration of business consulting agreement entered by subsidary	10
The period for which the business consulting agreement can be extended	10

Minimum duration of business consulting agreement entered by subsidary

No definition available.

Name:	CSM_MinimumDurationOfBusinessConsultingAgreementEnteredBySubsidary
Namespace Prefix:	CSM_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant