Document And Entity Information - shares	3 Months Ended
	Jul. 01, 2018	Aug. 03, 2018
Document Information [Abstract]
Entity Registrant Name	INTEGRATED DEVICE TECHNOLOGY INC
Entity Central Index Key	0000703361
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		129,347,795
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 01, 2018