Note L - A Summary of the Status of the Company's Stock Options (Details) - $ / shares	12 Months Ended
	Mar. 27, 2016	Mar. 29, 2015	Mar. 30, 2014
Options Outstanding After Replacement Stock Issuance [Member]
Options outstanding – beginning of year (in shares)	142,964
Options outstanding – beginning of year (in dollars per share)	$ 24.36
Options outstanding - end of year (in shares)		142,964
Options outstanding - end of year (in dollars per share)		$ 24.36
Options Outstanding Before Replacement Stock Issuance [Member]
Options outstanding – beginning of year (in shares)	94,375
Options outstanding – beginning of year (in dollars per share)	$ 36.90
Options outstanding - end of year (in shares)		94,375
Options outstanding - end of year (in dollars per share)		$ 36.90
Options outstanding – beginning of year (in shares)		279,500	429,500
Options outstanding – beginning of year (in dollars per share)		$ 15.22	$ 13.29
Granted (in shares)		50,000
Granted (in dollars per share)		$ 53.89
Expired (in shares)	(3,787)
Expired (in dollars per share)	$ 11.72
Exercised (in shares)	(15,147)	(235,125)	(150,000)
Exercised (in dollars per share)	$ 11.72	$ 14.74	$ 9.71
Options outstanding - end of year (in shares)	124,030		279,500
Options outstanding - end of year (in dollars per share)	$ 26.29		$ 15.22
Options exercisable - end of year (in shares)	67,221		190,750
Options exercisable - end of year (in dollars per share)	$ 18.44		$ 14.04
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		50,000
Weighted-average fair value of options granted (in dollars per share)		$ 11.97