Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2016	Jul. 29, 2016
Document and Entity Information
Entity Registrant Name	ITERIS, INC.
Entity Central Index Key	0000350868
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		32,067,503
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1