Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 44,315	$ 30,690	$ 118,193	$ 97,335
CHINA
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	17,089	11,566	44,586	33,860
UNITED STATES
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	6,070	9,285	17,309	31,325
TAIWAN, PROVINCE OF CHINA
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	5,496	413	12,732	2,206
KOREA, REPUBLIC OF
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	4,666	1,038	11,920	2,564
SINGAPORE
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	4,076	3,138	11,271	10,068
GERMANY
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	2,008	2,456	8,020	8,124
Rest Of World [Member]
Note 18 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 4,910	$ 2,794	$ 12,355	$ 9,188