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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Cash, Cash Equivalents and Restricted Cash [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
Cash and cash equivalents |  | $ | 45,260 |  |  | $ | 13,434 |
Restricted cash |  |  | - |  |  |  | 1,142 |
Total cash, cash equivalents and restricted cash |  | $ | 45,260 |  |  | $ | 14,576 |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | Years Ended December 31, |
|  | 2023 |  |  | 2022 |
Weighted average common shares outstanding–basic |  |  | 11,461,399 |  |  |  | 10,673,017 |
Potentially dilutive securities: |  |  |  |  |  |  |  |
Unvested shares of restricted stock and employee stock options |  |  | 318,513 |  |  |  | 189,521 |
Weighted average common shares and common share equivalents outstanding–diluted |  |  | 11,779,912 |  |  |  | 10,862,538 |
Average number of potentially dilutive securities excluded from calculation |  |  | 140,079 |  |  |  | 478,024 |

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