v3.26.1
Note 10 - Stockholders' Equity (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jul. 24, 2026
Jan. 22, 2026
Oct. 18, 2022
Oct. 17, 2022
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Jun. 05, 2026
Aug. 29, 2011
Common Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.01   $ 0.01    
Proceeds from Warrant Exercises         $ 4,640 $ 0      
Share Repurchase Program, Authorized, Number of Shares (in shares)         797,491       347,491
Share Repurchase Program, Remaining Authorized, Number of Shares (in shares)         540,000        
Treasury Stock, Shares, Acquired (in shares)         0        
Treasury Stock, Common, Shares (in shares)         133,047   133,047    
Treasury Stock, Common, Value         $ 946   $ 946    
Over-subscription Warrant Holders [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) 2,643,499                
Proceeds from Issuance of Common Stock $ 41,800                
European Style Warrants [Member]                  
Class of Warrant or Right, Outstanding (in shares)     5,258,320            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)       0.2          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)     $ 4.75 $ 12.5          
Warrants, Target Trigger Price for Potential Acceleration of Exercise Date (in dollars per share)     $ 6.65 $ 17.5          
Class Of Warrant Or Right, Exercised In Period (in shares)             4,186,010    
Class Of Warrant Or Right, Percent, Exercised In Period             79.60%    
Stock Issued During Period, Shares, Issued for Settlement of Warrants (in shares)             837,202    
Class of Warrant or Right, Expired During Period (in shares)             1,072,310    
Stock Issued During Period, Shares, Issued for Over-Subscription Privilege (in shares)   214,462              
Proceeds from Warrant Exercises             $ 5,000    
Rights to Purchase Common Stock [Member]                  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)               1  
Class of Warrant or Right, Expired During Period (in shares) 3,131,220                
Class of Warrant or Right, Issued During Period (in shares)               6,550,435  
Class of Warrants or Right, Subscription Price (in dollars per share)               $ 6.9  
Class of Warrant or Right, Exercised During Period (in shares) 3,419,215                
Class of Warrant or Right, Exercised During Period, Percent 52.10%                
Stock Issued During Period, Shares, Subscription Rights Exercised (in shares) 3,419,215                
Class of Warrant or Right, Unexercised (in shares) 3,131,220