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Note 2 - Acquisitions and Divestiture (Details Textual) - USD ($)
$ in Thousands
Feb. 03, 2020
May 17, 2019
Feb. 29, 2020
Nov. 30, 2019
Goodwill, Ending Balance     $ 1,281,249 $ 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     1,071  
Business Combination, Contingent Consideration, Liability, Total $ 5,000   5,000 $ 0
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     2,700  
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