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v3.23.4

Note 5 - Fair Value Measurements (Tables) | 3 Months Ended
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Dec. 31, 2023
Notes Tables |
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] |
|  |  | Fair Value Measurements at December 31, 2023 |
Financial Assets | Balance Sheet Location |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Corporate money market funds (1) | Cash and cash equivalents |  | $ | 16,363 |  |  | $ | - |  |  | $ | - |  |  | $ | 16,363 |
U.S. Treasury bills (2) | Investments |  |  | - |  |  |  | 97,679 |  |  |  | - |  |  |  | 97,679 |
U.S. Treasury notes (2) | Other Assets |  |  | - |  |  |  | 15,064 |  |  |  | - |  |  |  | 15,064 |
Total |  | $ | 16,363 |  |  | $ | 112,743 |  |  | $ | - |  |  | $ | 129,106 |
|  |  | Fair Value Measurements at June 30, 2023 |
Financial Assets | Balance Sheet Location |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Corporate money market funds (1) | Cash and cash equivalents |  | $ | 23,923 |  |  | $ | - |  |  | $ | - |  |  | $ | 23,923 |
U.S. Treasury bills (2) | Investments |  |  | - |  |  |  | 110,577 |  |  |  | - |  |  |  | 110,577 |
Total |  | $ | 23,923 |  |  | $ | 110,577 |  |  | $ | - |  |  | $ | 134,500 |
Debt Securities, Available-for-Sale [Table Text Block] |
|  | December 31, 2023 |
Due within one year |  | $ | 97,679 |
Due within one and two years |  |  | 15,064 |
Total |  | $ | 112,743 |

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