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Note 4 - Other Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Other Liabilities [Table Text Block] |
|  | December 31, |
|  | 2024 |  |  | 2023 |
Professional services |  |  | 167,000 |  |  |  | 472,000 |
Operating costs |  |  | 858,000 |  |  |  | 450,000 |
Other |  |  | 863,000 |  |  |  | 304,000 |
Total other accrued liabilities |  | $ | 1,888,000 |  |  | $ | 1,226,000 |

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