Annual report pursuant to Section 13 and 15(d)

Gross Carrying Value and Accumulated Amortization of Intangible Assets (Details)

v3.21.2
Gross Carrying Value and Accumulated Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Indefinite And Finite Lived Intangible Assets [Line Items]    
Finite-Lived Accumulated Amortization $ 130,542 $ 121,976
Net Book Value 54,545 62,382
Intangible assets, gross 185,087 184,358
Trade Names    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 24,835 24,863
Finite-Lived Accumulated Amortization 0 0
Net Book Value 24,835 24,863
Customer Relationships    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 142,453 141,853
Finite-Lived Accumulated Amortization 114,463 106,491
Net Book Value $ 27,990 35,362
Weighted Average Amortization Period 14 years  
Patents    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 14,492 14,365
Finite-Lived Accumulated Amortization 13,688 13,228
Net Book Value $ 804 1,137
Weighted Average Amortization Period 12 years  
Trademarks and Tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 3,307 3,277
Finite-Lived Accumulated Amortization 2,391 2,257
Net Book Value $ 916 $ 1,020
Weighted Average Amortization Period 12 years