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Note 2 - Acquisitions (Details Textual) - USD ($)
$ in Thousands
5 Months Ended
Feb. 03, 2020
May 17, 2019
Nov. 30, 2019
Nov. 28, 2020
May 30, 2020
Dec. 01, 2018
Goodwill, Ending Balance     $ 1,281,808 $ 1,312,003   $ 1,305,171
Dalton Holdings [Member] | Other Income [Member]            
Gain (Loss) on Disposition of Business     18,764      
D.H.M Adhesives, Inc [Member]            
Payments to Acquire Businesses, Gross $ 9,500          
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High 8,100          
Goodwill, Ending Balance         $ 1,063  
Business Combination, Contingent Consideration, Liability, Total 5,000   $ 0 $ 5,800    
Business Combination, Consideration Transferred, Total $ 14,500          
D.H.M Adhesives, Inc [Member] | Customer Relationships [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total         11,900  
Ramapo [Member]            
Payments to Acquire Businesses, Gross   $ 8,292        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High   3,400        
Goodwill, Ending Balance         165  
Business Combination, Contingent Consideration, Liability, Total   2,654     767  
Business Combination, Consideration Transferred, Total   10,947        
Business Combination, Consideration Transferred, Receivables Settled   $ 2,166        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Excluding Intangible Assets         4,148  
Ramapo [Member] | Customer Relationships [Member]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total         $ 8,800