Note 12 - Commitments and Contingencies (Detail) (USD $)	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Operating Leases, Rent Expense	$ 1,600,000	$ 1,700,000
Operating Leases, Future Minimum Payments Due	2,000,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,500,000
Operating Leases, Future Minimum Payments, Due in Two Years	430,000
Operating Leases, Future Minimum Payments, Due in Three Years	48,000
Royalty Expense	6,800,000	6,900,000
Royalty Expense Due	5,300,000
Royalty Expense Due in Next Twelve Months	2,900,000
Royalty Expense Due in Two Years	1,500,000
Royalty Expense Due in Three Years	875,000
Capitalized Legal and Other Costs	$ 1,000,000