Note 17 - Segment and Geographic Information (Details) - Net Sales by End Market (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Net sales	$ 34,018	$ 30,622	$ 66,645	$ 59,873
Industrial And Embedded Systems [Member]
Segment Reporting Information [Line Items]
Net sales	17,943	15,923	34,441	32,011
Networking And Storage [Member]
Segment Reporting Information [Line Items]
Net sales	10,273	7,656	20,180	14,091
Communications Infrastructure [Member]
Segment Reporting Information [Line Items]
Net sales	5,697	6,737	11,673	13,465
Other Markets [Member]
Segment Reporting Information [Line Items]
Net sales	$ 105	$ 306	$ 351	$ 306