Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information (USD $)
12 Months Ended
Mar. 29, 2015
Jun. 02, 2015
Sep. 26, 2014
Document and Entity Information [Abstract]      
Entity Registrant Name Exar Corporation    
Document Type 10-K    
Current Fiscal Year End Date --03-29    
Entity Common Stock, Shares Outstanding   48,047,601dei_EntityCommonStockSharesOutstanding  
Entity Public Float     $ 198,800,000dei_EntityPublicFloat
Amendment Flag false    
Entity Central Index Key 0000753568    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Document Period End Date Mar. 29, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY