Note C - Income Per Share - Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Net income, basic calculation	$ 13,596	$ 11,075
Number of shares, basic calculation (in shares)	4,115,000	4,116,000
Net income per share, basic calculation (in dollars per share)	$ 3.30	$ 2.69
Effect of dilutive employee stock options (in shares)	0	0
Effect of dilutive employee stock options (in dollars per share)	$ 0	$ 0
Net income, diluted calculation	$ 13,596	$ 11,075
Number of shares, diluted calculation (in shares)	4,115,000	4,116,000
Net income per share, diluted calculation (in dollars per share)	$ 3.30	$ 2.69