v2.4.0.8

Summary of Significant Accounting Policies (Details) - Valuation inputs hierarchy classification for the warrant liability measured at fair value on a recurring basis (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Fair Value, Inputs, Level 1 [Member] |  |
Summary of Significant Accounting Policies (Details) - Valuation inputs hierarchy classification for the warrant liability measured at fair value on a recurring basis [Line Items] |  |
Warrant liability |  |
Fair Value, Inputs, Level 2 [Member] |  |
Summary of Significant Accounting Policies (Details) - Valuation inputs hierarchy classification for the warrant liability measured at fair value on a recurring basis [Line Items] |  |
Warrant liability |  |
Fair Value, Inputs, Level 3 [Member] |  |
Summary of Significant Accounting Policies (Details) - Valuation inputs hierarchy classification for the warrant liability measured at fair value on a recurring basis [Line Items] |  |
Warrant liability | $ 1,647 | $ 939

X
- Details
Name: | cdti_SummaryofSignificantAccountingPoliciesDetailsValuationinputshierarchyclassificationforthewarrantliabilitymeasuredatfairvalueonarecurringbasisLineItems
Namespace Prefix: | cdti_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Current portion of warrant liabilities. + References No definition available. + Details
Name: | cdti_WarrantLiabilityCurrent
Namespace Prefix: | cdti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant