Note D - Income Per Share - Table of Earnings Per Share Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 28, 2015	Jun. 29, 2014
Basic EPS
Basic calculation	$ 2,310	$ 4,071
Basic calculation (in shares)	4,584,000	4,471,000
Basic calculation (in dollars per share)	$ 0.50	$ 0.91
Effect of dilutive employee stock options (in shares)	37,000	122,000
Effect of dilutive employee stock options (in dollars per share)		$ (0.02)
Diluted EPS
Diluted calculation	$ 2,310	$ 4,071
Diluted calculation (in shares)	4,621,000	4,593,000
Diluted calculation (in dollars per share)	$ 0.50	$ 0.89