Note D - Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 29, 2025	Jun. 30, 2024
Net income	$ 8,928	$ 9,277
Weighted average basic shares outstanding (in shares)	4,089,000	4,085,000
Effect of dilutive share-based awards (in shares)	35,000	4,000
Weighted average diluted shares outstanding (in shares)	4,124,000	4,089,000
Basic (in dollars per share)	$ 2.18	$ 2.27
Diluted (in dollars per share)	$ 2.16	$ 2.27
Anti-dilutive share-based awards (in shares)	0	0