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Leases (Future Minimum Rental Payments) (Details) - USD ($)
$ in Thousands
Nov. 30, 2020
Aug. 31, 2020
Leases [Abstract]    
Remainder of fiscal year 2021 $ 1,611  
Fiscal year 2022 1,969  
Fiscal year 2023 1,622  
Fiscal year 2024 1,471  
Fiscal year 2025 937  
Thereafter 2,464  
Total undiscounted future cash flows 10,074  
Less: Interest (1,043)  
Total operating lease liabilities $ 9,031 $ 8,360