Note M - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - Outstanding Stock Options (Details) - USD ($)	12 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Mar. 25, 2018
Options outstanding (in shares)	10,000	42,234	68,498
Options outstanding, weighted average exercise price (in dollars per share)	$ 89.90	$ 46.807	$ 33.438
Options outstanding, weighted average remaining contractual life (Year)	3 years 164 days
Options outstanding, aggregate intrinsic value
Options exercisable (in shares)	3,333	32,234
Options exercisable, weighted average exercise price (in dollars per share)	$ 89.90	$ 33.438
Options exercisable, weighted average remaining contractual life (Year)	3 years 164 days
Options exercisable, aggregate intrinsic value