Note 10 - Asbestos Related Lawsuits and Claims (Details) - Asbestos Related Lawsuits And Claims [Member] $ in Thousands	3 Months Ended	36 Months Ended
Feb. 27, 2016 USD ($)	Feb. 28, 2015 USD ($)	Nov. 28, 2015 USD ($)
Lawsuits and claims settled	2	1	25
Settlement amounts	$ 75	$ 50	$ 2,072
Insurance payments received or expected to be received	$ 56	$ 37	$ 1,648

Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12053-110248

Name:	us-gaap_LossContingencyReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant