Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 162,050	$ 125,322	$ 122,026
CHINA
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	62,085	43,537	41,118
UNITED STATES
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	23,479	37,079	32,322
TAIWAN, PROVINCE OF CHINA
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	17,955	3,397	4,347
KOREA, REPUBLIC OF
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	15,833	3,337	3,346
SINGAPORE
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	15,361	13,397	13,827
GERMANY
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	11,257	11,270	11,692
Rest Of World [Member]
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 16,080	$ 13,305	$ 15,374