Note 8 - Fair Value Measurements - Changes in Fair Value of Level 3 Assets and Liabilities (Details) - Investment, Available-For-Sale [Member] - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Balance, asset | $ 11,574 | $ 12,123 | $ 12,347 | $ 12,553 |
| Included in interest income, asset | 44 | 44 | 136 | 134 |
| Included in other comprehensive income (loss), asset | (72) | 387 | (92) | 652 |
| Settlements, asset | 0 | 0 | (845) | (785) |
| Balance, asset | $ 11,546 | $ 12,554 | $ 11,546 | $ 12,554 |
| X | ||||||||||
- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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