Note 14 - Commitments and Contingencies (Details) - Outstanding Liabilities for Remediation Activities, Net of Payments (USD $) In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Outstanding Liabilities for Remediation Activities, Net of Payments [Abstract]
Liabilities for remediation activities	$ 31	$ 76

Carrying amount of the liability for remediation of environmental damage pertaining to assets or businesses previously disposed.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.Y.Q4)

-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section Y

-Paragraph Question 4

Name:	us-gaap_EnvironmentalExitCostsAssetsPreviouslyDisposedLiabilityForRemediation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant