Note 4 - Other Accrued Liabilities - Other Accrued Liabilities (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Professional services | $ 546,000 | $ 141,000 |
| Operating costs | 1,213,000 | 1,026,000 |
| Other | 439,000 | 585,000 |
| Total other accrued liabilities | $ 2,198,000 | $ 1,752,000 |
| X | ||||||||||
- Definition The amount of accrued liabilities classified as current not specifically disclosed. No definition available.
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| X | ||||||||||
- Definition The amount of accrued operating costs classified as current. No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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