Quarterly report [Sections 13 or 15(d)]

Note 4 - Restricted Cash and Restricted Cash Equivalents (Details Textual)

v3.25.3
Note 4 - Restricted Cash and Restricted Cash Equivalents (Details Textual)
Sep. 30, 2025
USD ($)
Sep. 22, 2025
USD ($)
Advance
Jun. 18, 2025
USD ($)
Advance
Dec. 31, 2024
USD ($)
Aug. 27, 2024
USD ($)
Restricted Cash and Cash Equivalents Items [Line Items]          
Restricted cash $ 1,000,000     $ 0  
Restricted cash equivalents $ 0     $ 600,000  
Hanmi Loan Agreement [Member]          
Restricted Cash and Cash Equivalents Items [Line Items]          
Loan agreement amount         $ 10,000,000
Hanmi Facility Agreement [Member]          
Restricted Cash and Cash Equivalents Items [Line Items]          
Loan agreement amount   $ 11,900,000 $ 8,500,000    
Maximum number of advances | Advance   8 5    
Maximum amount available under single advance   $ 2,000,000 $ 2,500,000    
Minimum amount available under single advance   $ 500,000