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v3.25.1

Note 3 - Prepaid Expenses and Other Current Assets (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Prepaid insurance |  | $ | 403 |  |  | $ | 800 |
Contract research organization and other deposits |  |  | 1,394 |  |  |  | 6,173 |
Interest receivable |  |  | 864 |  |  |  | 947 |
Other |  |  | 162 |  |  |  | 38 |
Total prepaid expenses and other current assets |  | $ | 2,823 |  |  | $ | 7,958 |

X
- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration