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Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis - USD ($) $ in Thousands | Oct. 31, 2023 | Jul. 31, 2023
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Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | $ 72,919 | $ 69,676
Corporate Bonds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 46,476 | 46,439
U.S. Treasury Bills [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 12,418 | 11,275
Common Stock [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 8,759 | 3,898
Warrants [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 1,090 | 865
Hedge Funds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 2,318 | 4,984
Convertible Note Receivable [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 1,858 | 1,921
Equity Securities [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  | 294
Level 1 [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 21,177 | 16,332
Level 1 [Member] | Corporate Bonds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 1 [Member] | U.S. Treasury Bills [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 12,418 | 11,275
Level 1 [Member] | Common Stock [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 8,759 | 3,898
Level 1 [Member] | Warrants [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  | 865
Level 1 [Member] | Hedge Funds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 1 [Member] | Convertible Note Receivable [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 1 [Member] | Equity Securities [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  | 294
Level 2 [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 46,476 | 46,439
Level 2 [Member] | Corporate Bonds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 46,476 | 46,439
Level 2 [Member] | U.S. Treasury Bills [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 2 [Member] | Common Stock [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 2 [Member] | Warrants [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 2 [Member] | Hedge Funds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 2 [Member] | Convertible Note Receivable [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 2 [Member] | Equity Securities [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 3 [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 5,266 | 6,905
Level 3 [Member] | Corporate Bonds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 3 [Member] | U.S. Treasury Bills [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 3 [Member] | Common Stock [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |
Level 3 [Member] | Warrants [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 1,090 |
Level 3 [Member] | Hedge Funds [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | 2,318 | 4,984
Level 3 [Member] | Convertible Note Receivable [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets | $ 1,858 | 1,921
Level 3 [Member] | Equity Securities [Member] |  |
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items] |  |
Assets |  |

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