Note 11 - Assumptions Used to Determine Net Periodic Pension Cost (Details)	12 Months Ended
Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013
Assumptions used to determine net periodic pension cost:
Discount rate	3.75%	3.75%	4.25%
Increase in future compensation levels	3.00%	3.00%	3.00%

Expected rate of compensation increases (for pay-related plans).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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