Note 14 - Stock-based Compensation (Details) - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Note 14 - Stock-based Compensation (Details) - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs [Line Items]
Amount	$ 14,278	$ 19,217	$ 10,142
Employee Stock Option [Member]
Note 14 - Stock-based Compensation (Details) - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs [Line Items]
Amount	8,579	9,958	6,269
Weighted Average Expected Remaining Period	2 years 109 days	2 years 255 days	2 years 292 days
Performance Shares [Member]
Note 14 - Stock-based Compensation (Details) - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs [Line Items]
Amount	380	242	502
Weighted Average Expected Remaining Period	1 year 328 days	2 years 73 days	2 years 219 days
Restricted Stock Units (RSUs) [Member]
Note 14 - Stock-based Compensation (Details) - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs [Line Items]
Amount	3,568	5,970	1,557
Weighted Average Expected Remaining Period	2 years 109 days	2 years 73 days	2 years 6 months
Performance-Based RSUs [Member]
Note 14 - Stock-based Compensation (Details) - Unrecognized Stock-based Compensation Expense Related to Stock Options and RSUs [Line Items]
Amount	$ 1,751	$ 3,047	$ 1,814
Weighted Average Expected Remaining Period	2 years 36 days	2 years 6 months	3 years 146 days