Note E - Marketable Securities (Details) - Bond Maturities by Period (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014	Mar. 30, 2014
Bond Maturities by Period [Abstract]
June 29, 2014	$ 9,415	$ 11,187
June 29, 2014	5,045
June 29, 2014	3,204
June 29, 2014	1,166
June 29, 2014	$ 0

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value of available-for-sale debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing after the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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