v3.26.1
Note 4 - Equity (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
      

Fair Value Measurement at March 31, 2026

 
  

Carrying Value

  

Level 1

  

Level 2

  

Level 3

 

Liabilities:

                

Derivative liability

 $22,500        $22,500 

Totals liabilities measured and recorded at fair value

 $22,500  $  $  $22,500 
                 
      

Fair Value Measurement at December 31, 2025

 
  

Carrying Value

  

Level 1

  

Level 2

  

Level 3

 

Liabilities:

                

Derivative liability

 $22,500        $22,500 

Totals liabilities measured and recorded at fair value

 $22,500  $  $  $22,500 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

March 31, 2026

  

December 31, 2025

 

Closing stock price:

 $0.17  $0.17 

Volatility:

  180.0%  180.0%

Expected term (in years):

  1.70   1.70 

Risk-free rate:

  3.6%  3.6%
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
  

2026

  

2025

 
  Number of  Weighted Average  Number of  Weighted Average 
  

Warrants

  

Exercise Price

  

Warrants

  

Exercise Price

 

Outstanding at January 1,

  1,319,696  $24.40   39,633  $503.75 

Warrants cancelled or expired

  13   14,440.00       

Outstanding at March 31,

  1,319,683  $24.26   39,633  $503.75 
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
  

2026

  

2025

 
  Number of  Weighted Average  Number of  Weighted Average 
  

Options

  

Exercise Price

  

Options

  

Exercise Price

 

Outstanding at January 1,

  5,705  $6,081.93   5,706  $6,081.61 

Options expired or cancelled

        1   4,280.00 

Outstanding at March 31,

  5,705  $6,081.93   5,705  $6,081.93 
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
  

2026

  

2025

 
  

Number of

  

Weighted Average

  

Number of

  

Weighted Average

 
  

Units

  

Grant Date Fair Value

  

Units

  

Grant Date Fair Value

 

Outstanding at January 1,

  141,360  $2.20   2,124  $362.71 

Restricted stock units granted

        1,600   22.05 

Restricted stock units vested

  33,570   2.38   200   2813.10 

Restricted stock units forfeited or cancelled

  22,611   2.06   37   2861.35 

Outstanding at March 31,

  85,179  $2.17   3,487  $39.34