Note 2 - Investments - Realized Gains and Losses Related to the Sale of Securities (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Gross gains | $ 24,552 | $ 0 | $ 41,566 | $ 0 |
| Gross losses | (136,534) | (24,744) | (172,090) | (500,890) |
| Net security losses | (111,982) | (24,744) | (130,524) | (500,890) |
| Increase (decrease) in allowance for credit losses | 24,505 | 422,252 | (63,996) | (10,723) |
| Real Estate Loan [Member] | ||||
| Mortgage loans on real estate | $ 24,505 | $ 422,252 | $ (63,996) | $ (10,723) |
| X | ||||||||||
- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of credit loss expense (reversal of expense) for financing receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt and equity securities. No definition available.
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| X | ||||||||||
- Definition The gross gain realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. No definition available.
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| X | ||||||||||
- Definition The gross loss realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. No definition available.
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| X | ||||||||||
- Details
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