License Fees (Details Textual) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Non-Refundable License Fees	$ 4.5

The carrying amount of license fees that are non refundable as of the balance sheet date.

No definition available.

Name:	cmxi_NonRefundableLicenseFees
Namespace Prefix:	cmxi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant