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Note 10 - Common Stock Repurchases (Details) (USD $)
In Millions, unless otherwise specified
Aug. 28, 2007
Jul. 09, 2013
August 2007 Repurchase Plan [Member]    
Note 10 - Common Stock Repurchases (Details) [Line Items]    
Stock Repurchase Program, Authorized Amount $ 100.0us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_ShareRepurchaseProgramAxis
= exar_August2007RepurchasePlanMember		  
July 2013 Repurchase Program [Member]    
Note 10 - Common Stock Repurchases (Details) [Line Items]    
Stock Repurchase Program, Authorized Amount   $ 50.0us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_ShareRepurchaseProgramAxis
= exar_July2013RepurchaseProgramMember