v3.26.3
Note 4 - Stock-based Compensation (Tables)
6 Months Ended
Sep. 30, 2026
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended September 30,

  

Six Months Ended September 30,

 
  

2026

  

2025

  

2026

  

2025

 

Cost of revenues

 $533  $266  $875  $605 

Research and development

  829   511   1,433   1,199 

Selling, general and administrative

  5,155   2,989   9,473   6,488 

Total

  6,517   3,766   11,781   8,292 
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
  

Six Months Ended September 30,

 
  

2025

 

Expected volatility

  74.01%

Risk-free interest rate

  4.19%

Expected life (years)

  6.31 

Dividend yield

 

None