v3.10.0.1
Document And Entity Information - shares
9 Months Ended
Dec. 30, 2018
Feb. 01, 2019
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   129,283,320
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 30, 2018  
Emerging Growth Company false  
Smaller Reporting Company false