Summary Of Significant Accounting Policies Expected Useful Life And Residual Value And Service Revenue (Details)	Dec. 31, 2012
Plant and machinery expected useful life minimum	5
Plant and machinery expected useful life maximum	10
Motor vehicles expected useful life	5
Office equipment expected useful life minimum	3
Office equipment expected useful life maximum	5
Percentage of Plant and machiery residual value	5
Percentage of Motor vehicles residual value	5
Percentage of Office equipment residual value	5

The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

No definition available.

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