Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 22, 2018	Jun. 30, 2017
Document and Entity Information
Entity Registrant Name	CDTI ADVANCED MATERIALS, INC.
Entity Central Index Key	0000949428
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		15,803,736
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 28,052,767