Note E - Changes in Allowance for Doubtful Accounts (Details) - USD ($)	12 Months Ended
	Mar. 27, 2016	Mar. 29, 2015	Mar. 30, 2014
Beginning balance	$ 443,000	$ 433,000	$ 130,000
Bad debt expense	38,000	23,000	21,000
Uncollectible marketing fund contributions	0	0	320,000
Accounts written off	(10,000)	(13,000)	(38,000)
Ending balance	$ 471,000	$ 443,000	$ 433,000