Note K - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 26, 2016	Mar. 27, 2016
Options outstanding at the beginning of the fiscal year (A) (in shares)	124,030
Options outstanding, weighted average exercise price (in dollars per share)	$ 26.29
Options outstanding, weighted average remaining contractual life	3 years 40 days	2 years 47 days
Options outstanding, aggregate intrinsic value	$ 516	$ 1,952
Exercised (in shares)	(48,285)
Exercised, weighted average exercise price (in dollars per share)	$ 11.72
Exercised, aggregate intrinsic value	$ 1,555
Options outstanding (in shares)	75,745	124,030
Options outstanding, weighted average exercise price (in dollars per share)	$ 35.58	$ 26.29
Options exercisable (in shares)	18,936
Options exercisable, weighted average exercise price (in dollars per share)	$ 35.58
Options exercisable, weighted average remaining contractual life	3 years 40 days
Options exercisable, aggregate intrinsic value	$ 129