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Note 2 - Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Fair Value, by Balance Sheet Grouping [Table Text Block] |
|  |  |  |  | December 31, 2023 |  |  | December 31, 2022 |
Financial Assets: |  | Level |  |  | Carrying Value |  |  | Fair Value |  |  | Carrying Value |  |  | Fair Value |
Cash and cash equivalents |  | 2 |  |  | $ | 7,546,689 |  |  | $ | 7,546,689 |  |  | $ | 7,148,207 |  |  | $ | 7,148,207 |
Certificates of deposit |  | 2 |  |  |  | 1,525,173 |  |  |  | 1,499,675 |  |  |  | 1,004,603 |  |  |  | 999,919 |
Total |  |  |  |  | $ | 9,071,862 |  |  | $ | 9,046,364 |  |  | $ | 8,152,810 |  |  | $ | 8,148,126 |

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