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Financing Obligation (Future Minimum Payments Under The Financing Obligation) (Details)
$ in Thousands
Aug. 31, 2019
USD ($)
Financing Obligation [Abstract]  
2020 $ 3,724
2021 3,798
2022 3,874
2023 3,952
2024 4,031
Thereafter 3,301
Total future minimum financing obligation payments 22,680
Less interest (5,009)
Present value of future minimum financing obligation payments $ 17,671