Note 1 - Organization (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Retained Earnings (Accumulated Deficit) | $ (239,145) | $ (223,947) |
| Net Cash Provided by (Used in) Operating Activities | (12,054) | $ (14,688) |
| Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents | 8,638 | |
| Debt Covenant, Covenant Compliance, Unrestricted Cash | 2,000 | |
| Unrestricted Cash | $ 6,638 | |
| X | ||||||||||
- Definition The amount of unrestricted cash the entity has in compliance with the debt covenants throughout the reporting period. No definition available.
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| X | ||||||||||
- Definition Represents unrestricted cash. No definition available.
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| X | ||||||||||
- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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