Note 13. Employee Benefit Plans (Detail) - Matching Contributions to the Plan (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011
Matching contributions	$ 267	$ 294	$ 404

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration