Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Cash, Cash Equivalents and Investments (Details Textual)

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Note 5 - Cash, Cash Equivalents and Investments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Debt Securities, Available-for-Sale, Realized Gain (Loss) $ 0 $ 0 $ 0 $ 100