Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 30,719	$ 32,627
CHINA
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	10,759	10,953
UNITED STATES
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	6,226	10,468
SINGAPORE
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	3,591	3,396
GERMANY
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	2,956	2,780
Europe (excluding Germany) [Member]
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	1,453	689
JAPAN
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	1,309	1,226
Rest Of World [Member]
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 4,425	$ 3,115