Note 8 - Fair Value Measurements (Details Textual) $ in Millions |
Jun. 30, 2026
USD ($)
|
Dec. 31, 2025
USD ($)
|
|---|---|---|
| Debt Securities, Available-for-Sale, Amortized Cost | $ 14.7 | |
| Debt Security Interest Rate Stated Percentage | 7.50% | |
| Debt Securities, Available-for-Sale, Current | $ 0.9 | $ 0.8 |
| Debt Securities, Available-for-Sale, Noncurrent | 10.7 | 11.5 |
| Debt Security, Available-For-Sale, Fair Value Discount Amount | $ 1.5 | $ 1.6 |
| Measurement Input, Discount Rate [Member] | ||
| Debt Securities, Available-for-Sale, Measurement Input | 0.129 | 0.126 |
| X | ||||||||||
- Definition Amount of fair value discount on available-for-sale debt securities. No definition available.
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| X | ||||||||||
- Definition Percentage interest rate of debt security. No definition available.
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| X | ||||||||||
- Definition Amortized cost of 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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| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Value of input used to measure 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/2003/role/disclosureRef
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| X | ||||||||||
- Details
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