Note 19. Segment and Geographic Information (Detail) - Net Sales by Product Lines (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011
Net sales by product line	$ 122,026	$ 130,566	$ 146,005
Connectivity [Member]
Net sales by product line	65,914	69,128	76,937
Power Management [Member]
Net sales by product line	25,690	29,164	29,033
Data Compression and Storage Solutions [Member]
Net sales by product line	19,547	15,097	16,876
Communications [Member]
Net sales by product line	$ 10,875	$ 17,177	$ 23,159