Annual report pursuant to section 13 and 15(d)

Document And Entity Information

Document And Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Apr. 01, 2012
Jun. 11, 2012
Oct. 02, 2011
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Apr. 01, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Entity Registrant Name EXAR CORP    
Entity Central Index Key 0000753568    
Current Fiscal Year End Date --04-01    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   45,496,745  
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 104.1