Inventory (Details Textual) (USD $)	3 Months Ended
Mar. 31, 2012	Dec. 31, 2011
Inventory (Textual) [Abstract]
Charges to fully write down the value of the inventory	$ 224,000	$ 5,574,000

Charges to fully write-down the value of the inventory.

No definition available.

Name:	cadx_ChargesToFullyWriteDownValueOfInventory
Namespace Prefix:	cadx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration