Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 125,322	$ 122,026	$ 130,566
CHINA
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	43,537	41,118	44,035
UNITED STATES
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	37,079	32,322	33,585
SINGAPORE
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	13,397	13,827	13,883
GERMANY
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	11,270	11,692	13,671
JAPAN
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	6,393	5,685	6,161
Europe (excluding Germany) [Member]
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	3,999	4,765	5,628
Rest Of World [Member]
Note 19 - Segment and Geographic Information (Details) - Net Sales by Geographic Area [Line Items]
Net sales	$ 9,647	$ 12,617	$ 13,603