Note C - Income Per Share - Table of Earnings Per Share Reconciliation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Basic EPS
Basic calculation	$ 11,703	$ 8,327	$ 7,468
Basic calculation (in shares)	4,486,000	4,450,000	4,400,000
Basic calculation (in dollars per share)	$ 2.61	$ 1.87	$ 1.70
Effect of dilutive employee stock options (in shares)	102,000	155,000	188,000
Effect of dilutive employee stock options (in dollars per share)	$ (0.06)	$ (0.06)	$ (0.07)
Diluted EPS
Diluted calculation	$ 11,703	$ 8,327	$ 7,468
Weighted Average Number of Shares Outstanding, Diluted	4,588,000	4,605,000	4,588,000
Diluted calculation (in dollars per share)	$ 2.55	$ 1.81	$ 1.63