Note C - Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 26, 2023	Mar. 27, 2022
Net income, Basic calculation	$ 19,623	$ 13,596
Shares, Basic calculation (in shares)	4,089,000	4,115,000
Net income per share, Basic calculation (in dollars per share)	$ 4.80	$ 3.30
Shares, Effect of dilutive employee stock options (in shares)	1,000	0
Net income per share, Effect of dilutive employee stock options (in dollars per share)	$ 0	$ 0
Net income, Diluted calculation	$ 19,623	$ 13,596
Shares, Diluted calculation (in shares)	4,090,000	4,115,000
Net income per share, Diluted calculation (in dollars per share)	$ 4.80	$ 3.30