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Note 3 - Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   

As of September 30, 2024

 
   

Adjusted

   

Unrealized

   

Unrealized

   

Market

 
   

Cost

   

Gains

   

Losses

   

Value

 

Level 1:

                               

Money Market Funds

  $ 4,217       -     $ -     $ 4,217  

Certificate of Deposits

    -       -       -       -  

Total Financial Assets

  $ 4,217     $ -     $ -     $ 4,217  
   

As of December 31, 2023

 
   

Adjusted

   

Unrealized

   

Unrealized

   

Market

 
   

Cost

   

Gains

   

Losses

   

Value

 

Level 1:

                               

Money Market Funds

  $ 1,793       -       -     $ 1,793  

Certificate of Deposits

    7,500       -       -       7,500  

Total Financial Assets

  $ 9,293     $ -     $ -     $ 9,293  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

 

 

September 30,

2024

   

December 31,

2023

 
Level 3:            

Fair value at inception for December 31, 2023, or the beginning of the period for September 30, 2024

  $ (19,703 )   $ (7,717 )

Change in fair value of warrant liabilities

    12,517       (11,986 )

Fair value as of period end

  $ (7,186 )   $ (19,703 )
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
   

As of

September 30,

2024

   

As of

December 31,

2023

 

Expected stock price volatility

    100

%

    143

%

Risk-free interest rate

    3.57

%

    3.85

%

Dividends yield

    0

%

    0

%

Expected life of warrants (years)

    3.75       4.50  

Exercise price

  $ 1.45     $ 1.45