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Financing Obligation (Future Principal Maturities) (Details) - Financing Obligation [Member]
$ in Thousands
Aug. 31, 2020
USD ($)
Future Principal Maturities Financing Obligation [Line Items]  
2021 $ 2,600
2022 2,887
2023 3,199
2024 3,538
2025 4,424
Thereafter
Total $ 16,648