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Note 2 - Acquisitions and Divestiture (Details Textual) - USD ($)
$ in Thousands
Feb. 03, 2020
May 17, 2019
May 30, 2020
Nov. 30, 2019
Goodwill, Ending Balance     $ 1,273,374 $ 1,281,808
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   5,000 $ 0
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