Note 2 - Significant Accounting Policies - Summary of CODM Segments (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Jun. 30, 2026 |
Mar. 31, 2026 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|||
| Research and development | $ 3,868 | $ 3,955 | $ 11,715 | $ 22,737 | |||||||
| General and administrative | 7,406 | 7,905 | 20,120 | 59,101 | |||||||
| Net loss | (10,726) | $ (8,603) | $ (10,331) | (10,807) | $ (44,224) | $ (23,403) | (29,660) | (78,434) | |||
| Cash and cash equivalents | 46,990 | 106,080 | 46,990 | 106,080 | $ 95,502 | ||||||
| CODM Monitoring [Member] | |||||||||||
| Research and development | (3,868) | (3,955) | (11,715) | (22,737) | |||||||
| General and administrative | (7,406) | (7,905) | (20,120) | (59,101) | |||||||
| Other segment items | [1] | 548 | $ 1,053 | 2,175 | $ 3,404 | ||||||
| Cash and cash equivalents | $ 46,990 | $ 46,990 | $ 95,502 | ||||||||
| |||||||||||
| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|