Note 5 - Accrued and Other Current Liabilities - Schedule of Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Refund liability (see Note 6) | $ 4,715 | $ 4,715 |
| Professional services | 4,177 | 3,732 |
| Employee costs | 442 | 577 |
| Accrued research and development expense | 587 | 655 |
| Other accrued expense | 53 | 470 |
| Total accrued and other current liabilities | $ 9,974 | $ 10,149 |
| X | ||||||||||
- Definition Amount of expenses incurred but not yet paid nor invoiced within one operating cycle, and liabilities classified as other. No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred and payable for research and development. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). 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://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment. No definition available.
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| X | ||||||||||
- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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