Note J - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 26, 2017	Mar. 27, 2016	Mar. 29, 2015
Unrecognized tax benefits, beginning of year	$ 208	$ 266	$ 283
Decreases of tax positions taken in prior years	(31)	(98)	(64)
Increases based on tax positions taken in current year	41	43	47
Settlements of tax positions taken in prior years	(51)	(3)
Unrecognized tax benefits, end of year	$ 167	$ 208	$ 266