Note C - Net Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 26, 2023
Net income	$ 19,616	$ 19,623
Basic (in shares)	4,081,000	4,089,000
Effect of dilutive share-based awards (in shares)	6,000	1,000
Weighted average diluted shares outstanding (in shares)	4,087,000	4,090,000
Basic (in dollars per share)	$ 4.81	$ 4.8
Diluted (in dollars per share)	$ 4.8	$ 4.8
Anti-dilutive share-based awards (in shares)	10,000	10,000