v3.26.1
Note 11 - Stockholders' Equity (Deficit) (Details Textual)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 20, 2026
shares
Mar. 31, 2026
USD ($)
shares
Jun. 30, 2026
shares
Mar. 12, 2026
shares
Mar. 11, 2026
shares
Dec. 31, 2025
shares
Common Stock, Shares Authorized (in shares)     5,000,000,000 5,000,000,000 1,500,000,000 5,000,000,000
Preferred Stock, Shares Authorized (in shares)     5,000,000     5,000,000
Stock Issued During Period, Shares, Reverse Stock Splits (in shares) 45,912          
Series B Preferred Stock [Member]            
Stock Issued During Period, Shares, New Issues (in shares)     0     131
Series B Preferred Stock [Member] | The 2021 Private Placement Program [Member]            
Stock Issued During Period, Shares, New Issues (in shares)   131       131
Series B Preferred Stock, Post-split [Member] | The 2021 Private Placement Program [Member]            
Preferred Stock, Convertible, Shares Issuable (in shares)   3,013        
Series F Preferred Stock [Member]            
Stock Issued During Period, Shares, New Issues (in shares)     0      
Stock Redeemed or Called During Period, Shares   1,346,633        
Stock Redeemed or Called During Period, Value | $   $ 350        
Reverse Stock Split [Member]            
Stockholders' Equity Note, Stock Split, Conversion Ratio 5   5