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v3.21.1

Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Apr. 30, 2021
Accounting Policies [Abstract] |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] |
| April 30, 2021
| Carrying Value |  | Estimated Fair Value
6.25% Notes | $ | 600,000 |  |  | $ | 638,592 |
0.0% Convertible Notes | $ | 472,757 |  |  | $ | 612,553 |
EPR Secured Notes | $ | 136,112 |  |  | $ | 199,426 |
EB-5 Development Notes | $ | 49,774 |  |  | $ | 51,069 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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