v3.26.1
Note 2 - Basis of Presentation, Principles of Consolidation and Significant Accounting Policies and Liquidity - Change in Accounting Policy (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Gain (loss) from change in fair value of warrant liability $ (7)   $ (560)   $ 10,763 $ (560)
Transaction costs allocated to warrant liabilities (2)   (1,207)   (695) (1,207)
Loss on issuance of warrant liabilities 0   (10,352)   (15,158) (10,352)
Net loss $ (7,635) $ (12,845) $ (17,809) $ (5,904) $ (20,480) $ (23,713)
Net loss per common share - basic and diluted (in dollars per share) $ (1.4)   $ (28.68)   $ (4.6) $ (47.61)
Other comprehensive income (loss)     $ (17,809)     $ (23,710)
Previously Reported [Member]            
Gain (loss) from change in fair value of warrant liability     9,609     18,663
Transaction costs allocated to warrant liabilities     (1,207)     (2,995)
Loss on issuance of warrant liabilities     (10,352)     (18,150)
Net loss     $ (7,640)     $ (14,076)
Net loss per common share - basic and diluted (in dollars per share)     $ (12.3)     $ (28.26)
Other comprehensive income (loss)     $ (7,640)     $ (14,073)
Revision of Prior Period, Change in Accounting Principle, Adjustment [Member]            
Gain (loss) from change in fair value of warrant liability     (10,169)     (19,223)
Transaction costs allocated to warrant liabilities     0     1,788
Loss on issuance of warrant liabilities     0     7,798
Net loss     $ (10,169)     $ (9,637)
Net loss per common share - basic and diluted (in dollars per share)     $ (16.38)     $ (19.35)
Other comprehensive income (loss)     $ (10,169)     $ (9,637)