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Equity Investments (Tables) | 6 Months Ended
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Jan. 31, 2020
Equity Investments [Abstract] |
Schedule of equity investments |
|  | January 31, 2020 |  |  | July 31, 2019 |
|  | (in thousands) |
Zedge, Inc. Class B common stock, 42,282 shares at January 31, 2020 and July 31, 2019 |  | $ | 72 |  |  | $ | 68 |
Rafael Holdings, Inc. Class B common stock, 27,419 shares at January 31, 2020 and July 31, 2019 |  |  | 555 |  |  |  | 567 |
Mutual funds |  |  | 5,263 |  |  |  | 5,053 |
Current equity investments |  | $ | 5,890 |  |  | $ | 5,688 |
Visa Inc. Series C Convertible Participating Preferred Stock ("Visa Series C Preferred") |  | $ | 4,045 |  |  | $ | 3,619 |
Hedge funds |  |  | 5,322 |  |  |  | 5,475 |
Other |  |  | 225 |  |  |  | 225 |
Noncurrent equity investments |  | $ | 9,592 |  |  | $ | 9,319 |
Schedule of carrying value of equity investments |
|  | Three Months Ended January 31, |  |  | Six Months Ended January 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
|  | (in thousands) |
Balance, beginning of period |  | $ | 3,937 |  |  | $ | 3,118 |  |  | $ | 3,919 |  |  | $ | 1,883 |
Adoption of change in accounting for equity investments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,213 |
Adjusted balance |  |  | 3,937 |  |  |  | 3,118 |  |  |  | 3,919 |  |  |  | 3,096 |
Adjustment for observable transactions involving a similar investment from the same issuer |  |  | 408 |  |  |  | (71 | ) |  |  | 426 |  |  |  | (49 | )
Redemptions |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | (2 | )
Impairments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance, end of the period |  | $ | 4,345 |  |  | $ | 3,045 |  |  | $ | 4,345 |  |  | $ | 3,045 |
Schedule of unrealized gains and losses for all equity investments |
|  | Three Months Ended January 31, |  |  | Six Months Ended January 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
|  | (in thousands) |
Net gains recognized during the period on equity investments |  | $ | 383 |  |  | $ | 128 |  |  | $ | 409 |  |  | $ | 81 |
Less: net gains and losses recognized during the period on equity investments redeemed during the period |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Unrealized gains recognized during the period on equity investments still held at the reporting date |  | $ | 383 |  |  | $ | 128 |  |  | $ | 409 |  |  | $ | 81 |

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