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Note 5 - Special Charges, Net (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 03, 2016
Aug. 27, 2016
May 29, 2016
Feb. 27, 2016
Nov. 28, 2015
Aug. 29, 2015
May 30, 2015
Feb. 28, 2015
Dec. 03, 2016
Nov. 28, 2015
Nov. 29, 2014
Other Nonrecurring (Income) Expense $ (1,856) $ 2,807 $ (370) $ (413) $ (62) $ (1,297) $ (934) $ (2,361) $ (168) $ 4,654 $ 51,501
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property                 (796) 330 2,769
Business Integration Project [Member]                      
Other Nonrecurring (Income) Expense                 (168) 4,654 51,501
Professional and Contract Services Expense                 257 715 7,946
Other Business Acquisition Cost of Acquired Entity Planned Restructuring Activities                 189 312 8,272
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property                 3,602    
Workforce Reduction Costs, Net of Reversal                 (37) 3,233
Severance Costs                     3,233
Business Integration Project [Member] | Cash Costs [Member]                      
Restructuring and Related Cost, Accelerated Depreciation                 1,313 2,190 25,187
Business Integration Project [Member] | Non-cash [Member]                      
Restructuring and Related Cost, Accelerated Depreciation                 $ 1,675 $ 1,474 $ 6,863