Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 28, 2021	Mar. 29, 2020	Mar. 31, 2019
Options outstanding (in shares)	10,000	10,000	42,234
Options outstanding, weighted average exercise price (in dollars per share)	$ 89.90	$ 89.90	$ 46.807
Options outstanding, weighted average remaining contractual life (Year)	2 years 5 months 15 days
Options outstanding, aggregate intrinsic value	$ 0
Options exercisable (in shares)	6,667	3,333
Options exercisable, weighted average exercise price (in dollars per share)	$ 89.90	$ 89.90
Options exercisable, weighted average remaining contractual life (Year)	2 years 5 months 15 days
Options exercisable, aggregate intrinsic value	$ 0