Note D - Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Net income	$ 5,199	$ 6,030	$ 14,127	$ 15,307
Weighted average basic shares outstanding (in shares)	4,089,000	4,085,000	4,089,000	4,085,000
Effect of dilutive share-based awards (in shares)	41,000	10,000	38,000	7,000
Weighted average diluted shares outstanding (in shares)	4,130,000	4,095,000	4,127,000	4,092,000
Basic (in dollars per share)	$ 1.27	$ 1.48	$ 3.45	$ 3.75
Diluted (in dollars per share)	$ 1.26	$ 1.47	$ 3.42	$ 3.74
Anti-dilutive share-based awards (in shares)	0	120	0	120