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Leases Supplemental Cash Flow Information Related to Leases (Details) - USD ($)
$ in Thousands
9 Months Ended
May 31, 2021
May 31, 2020
Supplemental Cash Flow Information Related to Leases [Abstract]    
Operating Lease, Payments $ 11,336 $ 11,908
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 5,468 $ 4,773