XML 38 R28.htm IDEA: XBRL DOCUMENT v3.22.0.1
Note 4 - Stock-based Compensation (Tables)
9 Months Ended
Dec. 31, 2021
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended December 31,

  

Nine Months Ended December 31,

 
  

2021

  

2020

  

2021

  

2020

 

Cost of revenues

 $36  $(23) $148  $35 

Research and development

  190   179   629   470 

Selling, general and administrative

  894   683   2,736   2,092 

Total

 $1,120  $839  $3,513  $2,597