v3.26.1
Note 5 - Stock-based Compensation (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2026

  

2025

  

2026

  

2025

 

General and administrative

 $256  $300  $503  $665 

Research and development

  180   117   313   237 

Total stock-based compensation expense

 $436  $417  $816  $902