Note 19 - Segment and Geographic Information (Details) - Net Sales by End Market (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Net sales by end market	$ 162,050	$ 125,322	$ 122,026
Industrial And Embedded Systems [Member]
Segment Reporting Information [Line Items]
Net sales by end market	79,050	72,458	63,396
High End Consumer [Member]
Segment Reporting Information [Line Items]
Net sales by end market	51,897	462	928
Infrastructure [Member]
Segment Reporting Information [Line Items]
Net sales by end market	$ 31,103	$ 52,402	$ 57,702