Note D - Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 25, 2023	Jun. 26, 2022
Basic EPS
Net income, basic calculation	$ 7,388	$ 7,137
Number of shares, basic calculation (in shares)	4,080	4,113
Net income per share, basic calculation (in dollars per share)	$ 1.81	$ 1.74
Effect of dilutive share-based awards (in shares)	8	0
Effect of dilutive employee stock options (in shares)	8	0
Effect of dilutive share-based awards (in dollars per share)	$ 0	$ 0
Diluted EPS
Net income, diluted calculation	$ 7,388	$ 7,137
Number of shares, diluted calculation (in shares)	4,088	4,113
Net income per share, diluted calculation (in dollars per share)	$ 1.81	$ 1.74