Name:	cdti_ClassOfWarrantOrRightRangeOfExercisePricesAbstract
Namespace Prefix:	cdti_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

N/A

No definition available.

Name:	cdti_ClassOfWarrantOrRightRollForward
Namespace Prefix:	cdti_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	cdti_ClassOfWarrantOrRightWeightedAverageExercisePriceAbstract
Namespace Prefix:	cdti_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of outstanding warrants or rights as of the balance sheet date that are exercisable.

No definition available.

Name:	cdti_WarrantsExercisableNumber
Namespace Prefix:	cdti_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Weighted average exercise price of exercisable warrants.

No definition available.

Name:	cdti_WarrantsExercisableWeightedAverageExercisePrice
Namespace Prefix:	cdti_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Number of warrants exercised during the period.

No definition available.

Name:	cdti_WarrantsExercised
Namespace Prefix:	cdti_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of warrants expired during the period.

No definition available.

Name:	cdti_WarrantsExpired
Namespace Prefix:	cdti_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Weighted average exercise price of warrants expires during the period.

No definition available.

Name:	cdti_WarrantsExpiredWeightedAverageExercisePrices
Namespace Prefix:	cdti_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Weighted average exercise price of outstanding warrants.

No definition available.

Name:	cdti_WarrantsOutstandingWeightedAverageExercisePrice
Namespace Prefix:	cdti_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Number of warrants or rights outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(27)(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682