v2.4.0.8

Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract] |  |
Disposal Group, Including Discontinued Operation, Increase in Estimated Litigation Reserve | $ 0.3 | $ 0.3

X
- Definition Amount of any increase in estimated litigation reserve attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period. + References No definition available. + Details
Name: | cdti_DisposalGroupIncludingDiscontinuedOperationIncreaseInEstimatedLitigationReserve
Namespace Prefix: | cdti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration