Note C - Income Per Share (Details) - Table of Earnings per Share Reconciliation (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Basic EPS
Basic calculation	$ 3,854	$ 2,648	$ 7,925	$ 6,002
Basic calculation	4,472,000	4,460,000	4,472,000	4,437,000
Basic calculation	$ 0.86	$ 0.59	$ 1.77	$ 1.35
Effect of dilutive employee stock options	121,000	165,000	121,000	166,000
Effect of dilutive employee stock options	$ (0.02)	$ (0.02)	$ (0.04)	$ (0.05)
Diluted EPS
Diluted calculation	$ 3,854	$ 2,648	$ 7,925	$ 6,002
Diluted calculation	4,593,000	4,625,000	4,593,000	4,603,000
Diluted calculation	$ 0.84	$ 0.57	$ 1.73	$ 1.30