v3.23.2

Note 1 - Organization and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Cash and Cash Equivalents [Table Text Block] |
|  | Balance as of |
|  | December 31, 2022 |  |  | December 31, 2021 |
Cash and cash equivalents |  | $ | 15,275 |  |  | $ | 7,663 |
Restricted cash |  |  | 5,000 |  |  |  | — |
Restricted cash, net of current portion |  |  | — |  |  |  | 5,000 |
Total cash, cash equivalents, and restricted cash |  | $ | 20,275 |  |  | $ | 12,663 |

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