Note 12 - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Apr. 03, 2016
Operating Leases, Rent Expense, Total	$ 1,600,000	$ 1,500,000	$ 1,500,000
Operating Leases, Future Minimum Payments Due, Total	3,300,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,500,000
Operating Leases, Future Minimum Payments, Due in Two Years	1,400,000
Operating Leases, Future Minimum Payments, Due in Three Years	473,000
Royalty Expense	7,200,000	$ 7,000,000	$ 9,000,000
Royalty Expense Due	4,400,000
Royalty Expense Due in Next Twelve Months	2,900,000
Royalty Expense Due in Two Years	$ 1,500,000