Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 30,690	$ 30,999	$ 97,335	$ 90,872
China [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	11,566	10,749	33,860	31,458
United States [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	9,285	8,711	31,325	22,987
Singapore [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	3,138	3,245	10,068	10,561
Germany [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	2,456	2,662	8,124	8,865
Japan [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	1,575	1,499	4,415	4,367
Europe (excluding Germany) [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	907	1,111	2,431	3,654
Rest Of World [Member]
Note 17 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 1,763	$ 3,022	$ 7,112	$ 8,980