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Financing Obligation (Future Principal Maturities) (Details) - USD ($)
$ in Thousands
Aug. 31, 2021
Aug. 31, 2020
Financing Obligation [Abstract]    
2022 $ 2,887  
2023 3,199  
2024 3,538  
2025 4,424  
Thereafter  
Financing obligation $ 14,048 $ 16,648