Note 4 - Investments - Details Investments by Major Investment Category (Details) - USD ($) $ in Thousands |
Mar. 31, 2025 |
Dec. 31, 2024 |
||||
|---|---|---|---|---|---|---|
| Fixed income securities, held-to-maturity | $ 0 | $ 1,000 | ||||
| Fair value total | 1,976 | 3,183 | ||||
| Amortized cost total | 1,976 | 3,183 | ||||
| US Government Agencies Debt Securities [Member] | ||||||
| Fair value | [1] | 0 | 1,000 | |||
| Fixed income securities, held-to-maturity | [1] | 0 | 1,000 | |||
| Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | ||||||
| Fair value | [2] | 1,976 | 2,183 | |||
| Amortized costs | [2] | $ 1,976 | $ 2,183 | |||
| ||||||
| X | ||||||||||
- Definition Amount of short-term investment measured at amortized cost. No definition available.
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Cost of investment in equity security measured at fair value 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/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|