Note 14 - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2016	Mar. 29, 2015	Mar. 30, 2014
Employee Stock Option [Member]
Amount	$ 6,385	$ 8,579	$ 9,958
Weighted Average Remaining Recognition Period	2 years 255 days	2 years 109 days	2 years 255 days
Performance Shares [Member]
Amount		$ 380	$ 242
Weighted Average Remaining Recognition Period		1 year 328 days	2 years 73 days
Restricted Stock Units (RSUs) [Member]
Amount	$ 2,052	$ 3,568	$ 5,970
Weighted Average Remaining Recognition Period	1 year 255 days	2 years 109 days	2 years 73 days
Performance-Based RSUs [Member]
Amount	$ 484	$ 1,751	$ 3,047
Weighted Average Remaining Recognition Period	1 year 182 days	2 years 36 days	2 years 182 days
Amount	$ 8,921	$ 14,278	$ 19,217
Weighted Average Remaining Recognition Period