Note 2 - Investments - Schedule of Investment Gains (Losses) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Recognized gains on sale of investments | $ 47,191 | $ (24,744) | $ 28,649 | $ (80,877) |
| Realized loss on charge offs of investments | (159,173) | 0 | (159,173) | (420,013) |
| Change in allowance for credit loss recognized in earnings | 24,505 | 422,252 | (63,996) | (10,723) |
| Unrealized net gains recognized in earnings | 262,352 | 597,588 | 216,742 | 575,798 |
| Embedded derivative | (3,114) | (275,201) | 37,732 | (393,963) |
| Net investment losses | $ 171,761 | $ 719,895 | $ 59,954 | $ (329,778) |
| X | ||||||||||
- 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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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in debt and equity securities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of decrease in 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) from sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of realized gain (loss) on the write off of debt securities. No definition available.
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