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
Nov. 30, 2016
Aug. 31, 2016
Indefinite And Finite Lived Intangible Assets [Line Items]    
Accumulated Amortization $ 203,931 $ 202,311
Other intangibles, gross 434,463 441,786
Other intangibles, net 230,532 239,475
Tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 89,795 90,909
Customer relationships    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 15 years  
Gross Carrying Value $ 287,156 292,671
Accumulated Amortization 167,320 166,252
Net Book Value $ 119,836 126,419
Patents    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 11 years  
Gross Carrying Value $ 29,987 30,296
Accumulated Amortization 22,634 22,233
Net Book Value $ 7,353 8,063
Trademarks and tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 18 years  
Gross Carrying Value $ 21,027 21,283
Accumulated Amortization 8,113 7,936
Net Book Value $ 12,914 13,347
Other intangibles    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 3 years  
Gross Carrying Value $ 6,498 6,627
Accumulated Amortization 5,864 5,890
Net Book Value $ 634 $ 737