Note 12 - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Royalty Expense	$ 4,900,000	$ 5,200,000
Royalty Expense Due	4,200,000
Royalty Expense Due in Next Twelve Months	2,600,000
Royalty Expense Due in Two Years	1,600,000
Royalty Expense Due in Three Years	$ 8,000