Note 6 - Investments (Details Textual) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
|
|
| Debt Securities, Available-for-Sale, Allowance for Credit Loss | $ 0 | $ 0 | $ 0 | ||
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | 170 | 170 | 124 | ||
| Proceeds from Sale of Debt Securities, Available-for-Sale | $ 0 | $ 100 | $ 0 | $ 100 | |
| Limited Liability Investments [Member] | |||||
| Equity Method Investment, Other-than-Temporary Impairment | $ 0 | $ 0 | $ 0 | $ 0 | |
| X | ||||||||||
- Definition Amount of allowance for credit 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/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
|
| X | ||||||||||
- Definition Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of cash inflow from sale 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/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|