Note 8 - Fair Value - Fair Values for Investments (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Realized gains (losses) | $ 0 | $ 137 |
| Changes in fair values | 41 | (78) |
| Reported Value Measurement [Member] | ||
| Carrying amount | 16,647 | 20,670 |
| Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | ||
| Carrying amount | $ 16,647 | $ 20,670 |
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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of realized gain (loss) on investment in debt and equity securities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Cost of investment in debt investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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