Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - A Summary of the Status of the Company's Stock Options (Details) (USD $)	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Options outstanding – beginning of year (in shares)	279,500	429,500	622,000
Options outstanding – beginning of year (in dollars per share)	$ 15.22	$ 13.29	$ 13.21
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	50,000	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 53.89	$ 0	$ 0
Expired (in shares)	0	0	0
Expired (in dollars per share)	$ 0	$ 0	$ 0
Exercised (in shares)	(235,125)	(150,000)	(192,500)
Exercised (in dollars per share)	$ 14.74	$ 9.71	$ 13.04
Options outstanding - end of year (in shares)	94,375	279,500	429,500
Options outstanding - end of year (in dollars per share)	$ 36.90	$ 15.22	$ 13.29
Options exercisable - end of year (in shares)	0	190,750	296,375
Options exercisable - end of year (in dollars per share)	$ 0	$ 14.04	$ 11.29
Weighted-average option fair values (in dollars per share)	$ 11.97