v3.26.1
Note 1 - Organization and Nature of Business (Details Textual)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 4 Months Ended 12 Months Ended
Sep. 15, 2021
USD ($)
Nov. 30, 2025
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
Jun. 30, 2024
USD ($)
$ / shares
shares
Jan. 31, 2024
USD ($)
$ / shares
shares
Mar. 31, 2026
Sep. 30, 2024
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
shares
Dec. 31, 2024
USD ($)
shares
Number of Reportable Segments           1   1  
License Agreement and Purchase Agreement [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) | shares   11,111,111              
Shares Issued, Price Per Share (in dollars per share) | $ / shares   $ 0.45              
Proceeds from Issuance or Sale of Equity   $ 5,000              
Proceeds from Issuance or Sale of Equity, Net   $ 5,000              
The March 2025 ATM [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) | shares               382,700  
Proceeds from Issuance or Sale of Equity               $ 200  
Open Market Sale Agreement, Maximum Aggregate Offering Price     $ 50,000         $ 50,000  
Open Market Sale Agreement, Sales Commission, Percentage     3.00%         3.00%  
Proceeds from Issuance of Common Stock               $ 100  
June 2024 Offering [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) | shares       50,000,000     50,000,000    
Shares Issued, Price Per Share (in dollars per share) | $ / shares       $ 0.8     $ 0.8    
Proceeds from Issuance or Sale of Equity             $ 40,000    
Proceeds from Issuance of Common Stock       $ 37,500     $ 37,500 0 $ 37,545
RA Capital Healthcare Fund 2024 [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) | shares         15,384,615        
Shares Issued, Price Per Share (in dollars per share) | $ / shares         $ 0.65        
Proceeds from Issuance of Common Stock         $ 9,900     $ 0 $ 9,945
Gross Proceeds from Issuance of Common Stock         $ 10,000        
The September 2021 ATM [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) | shares                 7,719,641
Proceeds from Issuance or Sale of Equity                 $ 9,100
Open Market Sale Agreement, Maximum Aggregate Offering Price $ 100,000                
Open Market Sale Agreement, Sales Commission, Percentage 3.00%                
Proceeds from Issuance of Common Stock                 $ 8,800