v3.26.1
Note 13 - Income Taxes (Details Textual)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
Income Tax Expense (Benefit) $ 24 $ 2 $ 76 $ 17
Operating Loss Carryforwards 298,182   298,182  
Operating Loss Carryforwards, Subject to Expiration 227,519   227,519  
Operating Loss Carry Forwards Annual Limit 14,284   14,284  
Unrecognized Tax Benefits 0   0  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 0   $ 0  
Rights [Member]        
Threshold Percentage of Beneficial Ownership for Significant Dilution in Ownership Interest     4.90%  
Class of Warrant or Right Number of Rights Per Common Stock Share     1  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares 0.001   0.001  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 7.7   $ 7.7  
Class of Warrant or Right Current Beneficial Ownership Percentage That Will Not Trigger Preferred Share Purchase Rights     4.90%