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Note 4 - Other Accrued Liabilities (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Notes Tables |
Other Liabilities [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Professional services |  | $ | 769,000 |  |  | $ | 472,000 |
Operating costs |  |  | 489,000 |  |  |  | 450,000 |
Other |  |  | 326,000 |  |  |  | 304,000 |
Total other accrued liabilities |  | $ | 1,584,000 |  |  | $ | 1,226,000 |

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- Definition Tabular disclosure of other liabilities. + 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration