Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - A Summary of the Status of the Company's Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 26, 2023	Mar. 27, 2022
Options, shares (in shares)	20,000	20,000
Options, weighted average exercise price (in dollars per share)	$ 79.2	$ 79.2
Options outstanding – weighted average remaining contractual life (Year)	3 years 4 months 9 days	1 year 11 months 1 day	2 years 11 months 1 day
Options outstanding - aggregate intrinsic value	$ 23	$ 40
Granted, shares (in shares)	10,000	0
Granted, weighted average exercise price (in dollars per share)	$ 78	$ 0
Expired, shares (in shares)	(10,000)	0
Granted, weighted average remaining contractual life (Year)	4 years 4 months 13 days
Expired, weighted average exercise price (in dollars per share)	$ 89.9	$ 0
Exercised, shares (in shares)		0
Exercised, weighted average exercise price (in dollars per share)		$ 0
Options outstanding - shares (in shares)	20,000	20,000	20,000
Options outstanding, weighed average exercise price (in dollars per share)	$ 73.25	$ 79.2	$ 79.2
Options exercisable - shares (in shares)	5,000	12,500
Options exercisable - weighted average exercise price (in dollars per share)	$ 68.5	$ 85.62
Options exercisable - weighted average remaining contractual life (Year)	2 years 4 months 9 days	1 year 18 days
Options exercisable - aggregate intrinsic value	$ 12	$ 10