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Note E - Marketable Securities (Details) - Marketable Securities (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2014
Mar. 30, 2014
Marketable Securities [Abstract]    
Cost $ 6,972 $ 10,947
Gross Unrealized Gains 133 240
Gross Unrealized Losses 0 0
Fair Market Value $ 7,105 $ 11,187