Quarterly report pursuant to Section 13 or 15(d)

Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Details)

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Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Feb. 28, 2017
Aug. 31, 2016
Indefinite And Finite Lived Intangible Assets [Line Items]    
Accumulated Amortization $ 209,353 $ 202,311
Other intangibles, gross 434,912 441,786
Other intangibles, net 225,559 239,475
Tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 89,630 90,909
Customer relationships    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 15 years  
Gross Carrying Value $ 287,584 292,671
Accumulated Amortization 171,853 166,252
Net Book Value $ 115,731 126,419
Patents    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 11 years  
Gross Carrying Value $ 29,992 30,296
Accumulated Amortization 23,047 22,233
Net Book Value $ 6,945 8,063
Trademarks and tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 18 years  
Gross Carrying Value $ 21,200 21,283
Accumulated Amortization 8,503 7,936
Net Book Value $ 12,697 13,347
Other intangibles    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 3 years  
Gross Carrying Value $ 6,506 6,627
Accumulated Amortization 5,950 5,890
Net Book Value $ 556 $ 737