Note D - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 26, 2016	Jun. 28, 2015
Basic calculation	$ 3,550	$ 2,310
Basic calculation (in shares)	4,166,000	4,584,000
Basic calculation (in dollars per share)	$ 0.85	$ 0.50
Effect of dilutive employee stock options (in shares)	25,000	37,000
Diluted calculation	$ 3,550	$ 2,310
Diluted (in shares)	4,191,000	4,621,000
Diluted (in dollars per share)	$ 0.85	$ 0.50