Note 5 - Cash, Cash Equivalents and Investments (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2023 |
Jun. 30, 2023 |
|
| Debt Securities, Available-for-Sale, Realized Gain (Loss) | $ 0 | $ (100) |
| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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