Note O - Share-based Compensation - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Dec. 26, 2021	Mar. 28, 2021
Options outstanding (in shares)	10,000
Options outstanding, weighted average exercise price (in dollars per share)	$ 89.90
Options outstanding, weighted average remaining contractual life (Year)	3 years 2 months 1 day	2 years 5 months 15 days
Options granted (in shares)	10,000
Granted, weighted average exercise price (in dollars per share)	$ 68.50
Granted, weighted average remaining contractual life (Year)	4 years 7 months 13 days
Options exercised (in shares)	0
Exercised, weighted average exercise price (in dollars per share)	$ 0
Exercised, aggregate intrinsic value	$ 0
Options outstanding (in shares)	20,000	10,000
Options outstanding, weighted average exercise price (in dollars per share)	$ 79.20	$ 89.90
Options outstanding, aggregate intrinsic value	$ 0
Options exercisable (in shares)	10,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 89.90
Options exercisable, weighted average remaining contractual life (Year)	1 year 8 months 15 days
Options exercisable, aggregate intrinsic value	$ 0