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Equity (Details Narrative) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Jul. 31, 2020
Class of Stock [Line Items] |  |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased | 5,200,000 |  |
Class B Common Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Aggregate repurchased shares | 8,000,000.0 |  |
Class B common stock shares repurchased | 554,744 | 463,792 | 671,117
Aggregate purchase price of shares repurchased | $ 13.4 | $ 2.8 | $ 4.2
Class B Common Stock [Member] | Employees [Member] |  |  |
Class of Stock [Line Items] |  |  |
Class B common stock shares repurchased | 200,438 | 109,381 | 37,348
Aggregate purchase price of shares repurchased | $ 9.0 | $ 1.3 | $ 0.3

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