Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - A Summary of the Status of the Company's Stock Options (Details) - $ / shares	12 Months Ended
	Mar. 28, 2021	Mar. 29, 2020
Options outstanding – beginning of year (in shares)	10,000	42,234
Options outstanding – beginning of year (in dollars per share)	$ 89.90	$ 46.807
Granted (in shares)	0	0
Granted (in dollars per share)	$ 0	$ 0
Expired (in shares)	0	0
Expired (in dollars per share)	$ 0	$ 0
Exercised (in shares)	0	(32,234)
Exercised (in dollars per share)	$ 0	$ 33.438
Options outstanding - end of year (in shares)	10,000	10,000
Options outstanding - end of year (in dollars per share)	$ 89.90	$ 89.90
Options exercisable (in shares)	6,667	3,333
Options exercisable, weighted average exercise price (in dollars per share)	$ 89.90	$ 89.90