Note J - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($)	12 Months Ended
	Mar. 27, 2016	Mar. 29, 2015	Mar. 30, 2014
Unrecognized tax benefits, beginning of year	$ 266,000	$ 283,000	$ 296,000
Decreases of tax positions taken in prior years	(98,000)	(64,000)	(34,000)
Increases based on tax positions taken in current year	43,000	47,000	$ 21,000
Settlements of tax positions taken in prior years	(3,000)	0
Unrecognized tax benefits, end of year	$ 208,000	$ 266,000	$ 283,000