Note K - Share-based Compensation - Outstanding Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended	12 Months Ended
		Sep. 25, 2016	Mar. 27, 2016	[1]
Options outstanding at the beginning of the fiscal year (in shares)	[1]	124,030
Options outstanding, weighted average exercise price (in dollars per share)	[1]	$ 26.29
Options outstanding, weighted average remaining contractual life		2 years 313 days	2 years 47 days
Options outstanding, aggregate intrinsic value		$ 1,196	$ 1,952
Exercised (in shares)		(48,285)
Exercised, weighted average exercise price (in dollars per share)		$ 11.72
Options 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)		37,873
Options exercisable, weighted average exercise price (in dollars per share)		$ 35.58
Options exercisable, weighted average remaining contractual life		2 years 313 days
Options exercisable, aggregate intrinsic value		$ 598

[1] Represents outstanding options after giving effect to the replacement options issued in connection with the Company's special dividend.