v3.26.1
Note 6 - Stock-based Compensation (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
      

Weighted-

 
      

Average

 
      

Grant Date

 
  

Number

  

Fair Value

 
  

of Shares

  

Per Share

 

Unvested units at December 31, 2025

  477,700  $2.32 

Granted

  353,500   0.86 

Vested

      

Forfeited

  (39,000)  2.32 

Unvested units at June 30, 2026

  792,200  $1.67 
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

June 30,

  

June 30,

 
  

2026

  

2025

  

2026

  

2025

 

Research and development

 $5  $23  $75  $38 

General and administrative

  273   28   521   56 

Total stock-based compensation

 $278  $51  $596  $94