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v3.23.3

Debt Securities (Tables) | 3 Months Ended
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Oct. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale Securities | The following is a summary of available-for-sale debt securities: Schedule of Available-for-sale Securities
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
|  | (in thousands) |
October 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit* |  | $ | 1,920 |  |  | $ | — |  |  | $ | (3 | ) |  | $ | 1,917 |
U.S. Treasury bills and notes |  |  | 25,085 |  |  |  | — |  |  |  | (141 | ) |  |  | 24,944 |
Government sponsored enterprise notes |  |  | 3,047 |  |  |  | — |  |  |  | (3 | ) |  |  | 3,044 |
Corporate bonds |  |  | 3,901 |  |  |  | — |  |  |  | (564 | ) |  |  | 3,337 |
Total |  | $ | 33,953 |  |  | $ | — |  |  | $ | (711 | ) |  | $ | 33,242 |
July 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit* |  | $ | 4,080 |  |  | $ | — |  |  | $ | (4 | ) |  | $ | 4,076 |
U.S. Treasury bills and notes |  |  | 31,186 |  |  |  | — |  |  |  | (148 | ) |  |  | 31,038 |
Government sponsored enterprise notes |  |  | 3,881 |  |  |  | — |  |  |  | (8 | ) |  |  | 3,873 |
Corporate bonds |  |  | 3,912 |  |  |  | — |  |  |  | (485 | ) |  |  | 3,427 |
Total |  | $ | 43,059 |  |  | $ | — |  |  | $ | (645 | ) |  | $ | 42,414 |
* | Each of the Company’s certificates of deposit has a CUSIP, was purchased in the secondary market through a broker and may be sold in the secondary market.
Schedule of Contractual Maturities of Available-for-sale Debt Securities | The contractual maturities of the Company’s available-for-sale debt securities at October 31, 2023 were as follows: Schedule of Contractual Maturities of Available-for-sale Debt Securities
|  | Fair Value |
|  |  | (in thousands) |
Within one year |  | $ | 26,185 |
After one year through five years |  |  | 5,904 |
After five years through ten years |  |  | 1,110 |
After ten years |  |  | 43 |
Total |  | $ | 33,242 |
Schedule of Available-for-sale Securities, Unrealized Loss Position | The following available-for-sale debt securities were in an unrealized loss position for which other-than-temporary impairments were not recognized: Schedule of Available-for-sale Securities, Unrealized Loss Position
|  | Unrealized Losses |  |  | Fair Value |
|  | (in thousands) |
October 31, 2023: |  |  |  |  |  |
Certificates of deposit |  | $ | 3 |  |  | $ | 1,917 |
U.S. Treasury bills and notes |  |  | 141 |  |  |  | 24,944 |
Government sponsored enterprise notes |  |  | 3 |  |  |  | 3,044 |
Corporate bonds |  |  | 564 |  |  |  | 3,337 |
Total |  | $ | 711 |  |  | $ | 33,242 |
July 31, 2023: |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 4 |  |  | $ | 3,356 |
U.S. Treasury bills and notes |  |  | 148 |  |  |  | 31,038 |
Government sponsored enterprise notes |  |  | 8 |  |  |  | 3,873 |
Corporate bonds |  |  | 485 |  |  |  | 3,368 |
Total |  | $ | 645 |  |  | $ | 41,635 |
Schedule of Continuous Unrealized Loss Position for 12 Months or Longer | The following available-for-sale debt securities included in the table above were in a continuous unrealized loss position for 12 months or longer: Schedule of Continuous Unrealized Loss Position for 12 Months or Longer
|  | Unrealized Losses |  |  | Fair Value |
|  | (in thousands) |
October 31, 2023: |  |  |  |  |  |
U.S. Treasury bills and notes |  | $ | 66 |  |  | $ | 639 |
Corporate bonds |  |  | 556 |  |  |  | 3,216 |
Total |  | $ | 622 |  |  | $ | 3,855 |
July 31, 2023: |  |  |  |  |  |  |  |
U.S. Treasury bills and notes |  | $ | 86 |  |  | $ | 816 |
Corporate bonds |  |  | 484 |  |  |  | 3,299 |
Total |  | $ | 570 |  |  | $ | 4,115 |

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