Quarterly report [Sections 13 or 15(d)]

Note 4 - Related Party Agreements (Details Textual)

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Note 4 - Related Party Agreements (Details Textual) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 01, 2026
Mar. 09, 2017
Feb. 28, 2025
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2022
Nov. 08, 2022
Feb. 28, 2015
Fortress [Member]                  
Percentage of Fully-diluted Outstanding Equity                 2.50%
Percentage of Equity or Debt Fnancing                 2.50%
Stock Issued During Period, Shares, New Issues (in shares) 111,209                
Fortress [Member] | Avenue Baergic Founders Agreement [Member]                  
Excess in Net Assets Value   $ 100.0              
Fortress [Member] | Management Services Agreement [Member]                  
Service Provided, Expense Recorded, Percentage     50.00%            
Costs and Expenses       $ 0.1 $ 0.1        
BaergicBio, Inc.[Member] | Founders Agreement and Management Services Agreement [Member]                  
Percentage of Equity Fee               2.50%  
Research And Development Expense, Licenses Acquired           $ 0.1      
Annual Equity Fee Expense         $ 0.1        
Common Stock, Issuable, Shares (in shares)         23,474        
Percentage Of Additional Consideration Of Equity Fee             2.50%    
BaergicBio, Inc.[Member] | Avenue Baergic Founders Agreement [Member]                  
Percentage Of Additional Consideration Of Equity Fee             2.50%    
Percentage Considered For The Calculation Of One-Time Fee             4.50%    
Annual Consulting Fee   0.5              
Increase in Annual Consulting Fee   $ 1.0