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, 2021
Aug. 31, 2021
Indefinite And Finite Lived Intangible Assets [Line Items]    
Accumulated Amortization $ 131,032 $ 130,542
Gross Carrying Value 182,432 185,087
Net Book Value $ 51,400 54,545
Customer relationships    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 14 years  
Gross Carrying Value $ 140,576 142,453
Accumulated Amortization 115,162 114,463
Net Book Value $ 25,414 27,990
Patents    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 12 years  
Gross Carrying Value $ 14,252 14,492
Accumulated Amortization 13,497 13,688
Net Book Value $ 755 804
Trademarks and tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 12 years  
Gross Carrying Value $ 3,255 3,307
Accumulated Amortization 2,373 2,391
Net Book Value 882 916
Tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 24,349 24,835
Accumulated Amortization 0 0
Net Book Value $ 24,349 $ 24,835