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Note 8 - Marketable Securities (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Marketable Securities [Table Text Block] |
|  | December 31, |
|  |  | 2023 |  |  |  | 2022 |
Marketable securities: |  |  |  |  |  |  |  |
Amortized cost |  | $ | 40,110 |  |  | $ | 87,411 |
Unrealized gains, net |  |  | 289,947 |  |  |  | 510,321 |
Total fair value |  | $ | 330,057 |  |  | $ | 597,732 |
Gain (Loss) on Securities [Table Text Block] |
|  |  |  |  | Year Ended December 31, |
|  |  |  |  | 2023 |  |  | 2022 |  |  | 2021 |
Gain/(loss) on marketable securities, net |  |  |  |  | $ | 21,262 |  |  | $ | (315,508 | ) |  | $ | 505,163 |
Dividend income (included in Other income, net and Special dividend income) |  |  | 202,749 |  |  |  | 18,002 |  |  |  | 16,958 |
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
Gain/(loss) on marketable securities, net | $ | 21,262 |  | $ | (315,508 | ) | $ | 505,163
Less: Net gain/(loss) recognized related to marketable securities sold |  | 10,614 |  |  | (15,120 | ) |  | -
Unrealized gain/(loss) related to marketable securities still held | $ | 31,876 |  | $ | (330,628 | ) | $ | 505,163

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- Definition Tabular disclosure of realized and unrealized gain (loss) on investment in security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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