Annual report pursuant to Section 13 and 15(d)

Revenue from Contracts with Customers Disaggregation of Revenue (Details)

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Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Disaggregation of Revenue [Line Items]    
Revenues $ 528,660 $ 493,292
Revenue, Remaining Performance Obligation, Amount 3,400  
Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenues 396,457 361,359
Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenues $ 132,203 $ 131,933