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 Thousands
1 Months Ended 3 Months Ended
Mar. 09, 2017
Feb. 28, 2015
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2022
Nov. 08, 2022
Fortress [Member]            
Percentage of Fully-diluted Outstanding Equity   2.50%        
Percentage of Equity or Debt Fnancing   2.50%        
Annual Equity Fee Expense     $ 0 $ 0    
Financing Equity Fee     100 100    
Fortress [Member] | Avenue Baergic Founders Agreement [Member]            
Excess in Net Assets Value $ 100,000          
Fortress [Member] | Management Services Agreement [Member]            
Costs and Expenses     $ 100 $ 100    
Fortress [Member] | The 2024 Annual Equity Fee [Member]            
Stock Issued During Period, Shares, New Issues (in shares)     102,185      
Fortress [Member] | The 2023 Annual Equity Fee [Member]            
Stock Issued During Period, Shares, New Issues (in shares)       22,476    
Fortress [Member] | Financing Equity Fee [Member]            
Stock Issuable, Shares, New Issuance (in shares)     23,474 5,543    
Fortress [Member] | Research and Development Expense [Member] | Management Services Agreement [Member]            
Service Provided, Expense Recorded, Percentage   50.00%        
Fortress [Member] | General and Administrative Expense [Member] | Management Services Agreement [Member]            
Service Provided, Expense Recorded, Percentage   50.00%        
BaergicBio, Inc.[Member] | Avenue Baergic Founders Agreement [Member]            
Percentage of Equity Fee           2.50%
Percentage Of Additional Consideration Of Equity Fee         2.50%  
Percentage Considered For The Calculation Of One-Time Fee         4.50%  
Term of Agreement (Year) 5 years          
Annual Consulting Fee $ 500          
Increase in Annual Consulting Fee $ 1,000