Note 19. Segment and Geographic Information (Detail) - Net Sales by Geographic Area (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011
Net sales	$ 122,026	$ 130,566	$ 146,005
China [Member]
Net sales	41,118	44,035	49,738
United States [Member]
Net sales	32,322	33,585	31,678
Singapore [Member]
Net sales	13,827	13,883	14,445
Germany [Member]
Net sales	11,692	13,671	13,619
Japan [Member]
Net sales	5,685	6,161	9,098
Europe (excluding Germany) [Member]
Net sales	4,765	5,628	9,486
Rest Of World [Member]
Net sales	$ 12,617	$ 13,603	$ 17,941