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Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Oct. 31, 2020
Accounting Policies [Abstract] |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] |
| October 31, 2020
| Carrying Value | Estimated Fair Value
6.25% Notes | $ | 600,000 |  | $ | 633,750 |
EPR Secured Notes | $ | 136,913 |  | $ | 159,713 |
EB-5 Development Notes | $ | 48,480 |  | $ | 48,660 |

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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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