Note 15. Lease Financing Obligation (Detail) - Summary of Interest Expense (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011
Interest expense	$ 165	$ 215	$ 1,258
Design Tools [Member]
Interest expense	143	210	232
Hillview Facility [Member]
Interest expense			1,020
Design Tools & Hillview Facility [Member]
Interest expense	$ 143	$ 210	$ 1,252