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Note 6 - Marketable Securities (Tables) | 9 Months Ended
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Sep. 30, 2023
Notes Tables |
Marketable Securities [Table Text Block] |
|  | As of September 30, 2023 |  |  | As of December 31, 2022 |
Marketable securities: |  |  |  |  |  |  |  |
Amortized cost |  | $ | 40,797 |  |  | $ | 87,411 |
Unrealized gains, net |  |  | 286,338 |  |  |  | 510,321 |
Total fair value |  | $ | 327,135 |  |  | $ | 597,732 |
Gain (Loss) on Securities [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Gain/(loss) on marketable securities, net |  | $ | 13,225 |  |  | $ | (75,491 | ) |  | $ | 17,642 |  |  | $ | (215,194 | )

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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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