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Leases (Narrative) (Details) - USD ($) | 6 Months Ended
--- | ---
Jan. 31, 2022 | Jan. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Rent | $ 5,985,000 |
Executive Chairman |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Related party lease payments made | 333,000 | $ 329,000
Rent | $ 685,000 |

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