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Fair Value Measurements (Details) - Schedule of balance of assets measured at fair value on a recurring basis - Fair Value Measurements, Recurring basis [Member] - USD ($) $ in Thousands | Jan. 31, 2021 | Jul. 31, 2020
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Fair Value Measurements (Details) - Schedule of balance of assets measured at fair value on a recurring basis [Line Items] |  |  |
Debt securities |  | $ 21,501 | $ 18,363
Equity investments included in current assets |  | 29,470 | 5,964
Equity investments included in noncurrent assets |  | 4,735 | 3,825
Total |  | 55,706 | 28,152
Contingent consideration included in other noncurrent liabilities |  | (799) | (396)
Level 1 [Member] |  |  |
Fair Value Measurements (Details) - Schedule of balance of assets measured at fair value on a recurring basis [Line Items] |  |  |
Debt securities | [1] | 3,667 | 2,498
Equity investments included in current assets | [1] | 29,470 | 5,964
Equity investments included in noncurrent assets | [1] |  |
Total | [1] | 33,137 | 8,462
Contingent consideration included in other noncurrent liabilities | [1] |  |
Level 2 [Member] |  |  |
Fair Value Measurements (Details) - Schedule of balance of assets measured at fair value on a recurring basis [Line Items] |  |  |
Debt securities | [2] | 17,834 | 15,865
Equity investments included in current assets | [2] |  |
Equity investments included in noncurrent assets | [2] | 2,416 |
Total | [2] | 20,250 | 15,865
Contingent consideration included in other noncurrent liabilities | [2] |  |
Level 3 [Member] |  |  |
Fair Value Measurements (Details) - Schedule of balance of assets measured at fair value on a recurring basis [Line Items] |  |  |
Debt securities | [3] |  |
Equity investments included in current assets | [3] |  |
Equity investments included in noncurrent assets | [3] | 2,319 | 3,825
Total | [3] | 2,319 | 3,825
Contingent consideration included in other noncurrent liabilities | [3] | $ (799) | $ (396)
[1] | – quoted prices in active markets for identical assets or liabilities
[2] | – observable inputs other than quoted prices in active markets for identical assets and liabilities
[3] | – no observable pricing inputs in the market

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