v3.26.1
Note 3 - Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

June 30, 2026

 
      

Quoted Prices

  

Significant

  

Significant

 
      

in Active Markets

  

Observable

  

Unobservable

 
      

for Identical Assets

  

Inputs

  

Inputs

 

Category Class

 

Total

  

(Level 1)

  

(Level 2)

  

(Level 3)

 

Senior Secured Note (unpaid principal of $1,367)

 $567  $-  $-  $567 

Warrant Liability

  1,079   -   -   1,079 

Total

 $1,646  $-  $-  $1,646 
  

December 31, 2025

 
      

Quoted Prices

  

Significant

  

Significant

 
      

in Active Markets

  

Observable

  

Unobservable

 
      

for Identical Assets

  

Inputs

  

Inputs

 

Category Class

 

Total

  

(Level 1)

  

(Level 2)

  

(Level 3)

 

Senior Secured Note (unpaid principal of $15,000)

 $5,448  $-  $-  $5,448 

Warrant Liability

  7,842   -   -   7,842 

Total

 $13,290  $-  $-  $13,290 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

Input Range

 
  

Senior Secured Note

  

Warrant Liability

 

Significant Unobservable Inputs:

        

Discount rate

  25%-26.5%   - 

Term to expiration (in years)

  2.49-3   4.85-5 

Calibration discount

  61.5%   - 

No exercise window (in years)

  -   0.19-0.21 

Volatility

  -   82.5%95.5% 

Risk-free rate

  -   3.65%4.14% 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Senior Secured Note

  

Warrant Liability

 

Balance as of December 31, 2025

 $5,448  $7,842 

Change in fair value

  128   (5,869)

Cash payments on Notes Payable

  (9,144)  - 
Loss on settlement of debt  8,861    
Extinguishment of liability due to Warrant Exchange  -   (894)

Settlement of Notes Payable via common stock issuance

  (4,726)  - 

Balance as of June 30, 2026

 $567  $1,079 
  

Senior Secured Note

  

Warrant Liability

 

Balance as of March 31, 2026

 $2,157  $4,699 

Change in fair value

  (17)  (2,726)

Cash payments on Notes Payable

  (1,765)  - 
Loss on settlement of debt  2,841    
Extinguishment of liability due to Warrant Exchange  -   (894)

Settlement of Notes Payable via common stock issuance

  (2,649)  - 

Balance as of June 30, 2026

 $567  $1,079