Note C - Income Per Share - Table of Earnings Per Share Reconciliation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013
Basic EPS
Basic calculation	$ 2,241	$ 1,107	$ 10,166	$ 7,109
Basic (in shares)	4,482,000	4,466,000	4,475,000	4,447,000
Basic (in dollars per share)	$ 0.50	$ 0.25	$ 2.27	$ 1.60
Effect of dilutive employee stock options (in shares)	121,000	156,000	121,000	162,000
Effect of dilutive employee stock options (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.06)	$ (0.06)
Diluted EPS
Diluted calculation	$ 2,241	$ 1,107	$ 10,166	$ 7,109
Diluted (in shares)	4,603,000	4,622,000	4,596,000	4,609,000
Diluted (in dollars per share)	$ 0.49	$ 0.24	$ 2.21	$ 1.54