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Cash, Cash Equivalents, and Restricted Cash and Cash Equivalents (Tables) | 9 Months Ended
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Apr. 30, 2019
Cash, Cash Equivalents, and Restricted Cash and Cash Equivalents [Abstract] |
Schedule of cash, cash equivalents, and restricted cash and cash equivalents |
|  | April 30, 2019 |  |  | July 31, 2018 |
|  | (in thousands) |
Cash and cash equivalents |  | $ | 79,326 |  |  | $ | 73,981 |
Restricted cash and cash equivalents |  |  | 162,848 |  |  |  | 129,216 |
Total cash, cash equivalents, and restricted cash and cash equivalents |  | $ | 242,174 |  |  | $ | 203,197 |

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