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Note 13 - Net Income (Loss) Per Share (Details) (Stock Options, Warrants and RSUs [Member])
In Millions, unless otherwise specified
9 Months Ended
Dec. 29, 2013
Stock Options, Warrants and RSUs [Member]
 
Note 13 - Net Income (Loss) Per Share (Details) [Line Items]  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1.1us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= exar_StockOptionsWarrantsAndRSUsMember