Note 8 - Litigation and Insurance Settlements (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended	12 Months Ended
Feb. 26, 2012	Mar. 03, 2013 Neltec and Nelco Insurance Claim [Member]	Mar. 03, 2013 Isola Patent Infringement [Member]	Mar. 03, 2013 Isola Patent Infringement [Member]
Note 8 - Litigation and Insurance Settlements (Details) [Line Items]
Gain (Loss) Related to Litigation Settlement	$ 1,598	$ 1,000	$ (1,000)	$ (1,000)

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration