v3.26.1
Note 4 - Stock-based Compensation (Tables)
3 Months Ended
Jun. 30, 2026
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended June 30,

 
  

2026

  

2025

 

Cost of revenues

 $343  $340 

Research and development

  605   687 

Selling, general and administrative

  4,316   3,499 

Total

  5,264   4,526 
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
  

Three Months Ended June 30,

 
  

2025

 

Expected volatility

  74.01%

Risk-free interest rate

  4.19%

Expected life (years)

  6.31 

Dividend yield

 

None