Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
6 Months Ended
Oct. 02, 2016
Nov. 01, 2016
Document Information [Line Items]    
Entity Registrant Name EXAR CORPORATION  
Entity Central Index Key 0000753568  
Trading Symbol exar  
Current Fiscal Year End Date --04-02  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Well-known Seasoned Issuer No  
Entity Common Stock, Shares Outstanding (in shares)   50,148,050
Document Type 10-Q  
Document Period End Date Oct. 02, 2016  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2  
Amendment Flag false