v3.8.0.1
Document And Entity Information - shares
6 Months Ended
Oct. 01, 2017
Nov. 03, 2017
Document Information [Abstract]    
Entity Registrant Name INTEGRATED DEVICE TECHNOLOGY INC  
Entity Central Index Key 0000703361  
Current Fiscal Year End Date --04-01  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding (in shares)   132,834,804
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Oct. 01, 2017