Acquisition of Specialty Chemical Intermediates Product Lines (Details)
$ in Thousands
9 Months Ended
Jan. 30, 2015
USD ($)
item
May 31, 2015
USD ($)
May 31, 2016
USD ($)
Aug. 31, 2015
USD ($)
Acquisitions        
Acquisition related costs (Note 14)   $ 584    
Acquisition cost has been allocated to the acquired tangible and identifiable intangible assets and liabilities assumed based on their fair values        
Goodwill     $ 43,899 $ 44,123
Henkel Corporation ( Seller)        
Acquisitions        
Number of product lines acquired | item 2      
Purchase price $ 33,285      
Lease term 10 years      
Period to perform certain manufacturing and application services 3 years      
Acquisition cost has been allocated to the acquired tangible and identifiable intangible assets and liabilities assumed based on their fair values        
Inventory $ 610      
Property, plant & equipment 1,064      
Goodwill 6,371      
Intangible assets 25,240      
Total purchase price $ 33,285      
Henkel Corporation ( Seller) | Selling, General and Administrative Expenses        
Acquisitions        
Acquisition related costs (Note 14)   $ 584