Note E - Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 24, 2023	Dec. 25, 2022	Dec. 24, 2023	Dec. 25, 2022
Net income, basic calculation	$ 2,607	$ 3,263	$ 15,706	$ 16,358
Basic calculation	$ 2,607	$ 3,263	$ 15,706	$ 16,358
Number of shares, basic calculation (in shares)	4,080	4,080	4,080	4,092
Basic calculation (in shares)	4,080	4,080	4,080	4,092
Net income per share, basic calculation (in dollars per share)	$ 0.64	$ 0.8	$ 3.85	$ 4
Basic calculation (in dollars per share)	$ 0.64	$ 0.8	$ 3.85	$ 4
Effect of dilutive share-based awards (in shares)	0	36	7	12
Effect of dilutive employee stock options (in shares)	0	36	7	12
Effect of dilutive share-based awards (in dollars per share)	$ 0	$ (0.01)	$ (0.01)	$ (0.01)
Net income, diluted calculation	$ 2,607	$ 3,263	$ 15,706	$ 16,358
Diluted calculation	$ 2,607	$ 3,263	$ 15,706	$ 16,358
Number of shares, diluted calculation (in shares)	4,080	4,116	4,087	4,104
Diluted calculation (in shares)	4,080	4,116	4,087	4,104
Net income per share, diluted calculation (in dollars per share)	$ 0.64	$ 0.79	$ 3.84	$ 3.99
Diluted calculation (in dollars per share)	$ 0.64	$ 0.79	$ 3.84	$ 3.99