XML 36 R25.htm IDEA: XBRL DOCUMENT v3.20.2
Note 3 - Stock-based Compensation (Tables)
3 Months Ended
Jun. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   
Three Months Ended June 30,
 
   
2020
   
2019
 
Cost of revenues
  $
28
    $
3
 
Research and development
   
130
     
10
 
Selling, general and administrative
   
751
     
236
 
Total
  $
909
    $
249
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
Three Months Ended June 30,
 
   
2020
   
2019
 
Expected volatility
   
N/A
     
66.5
%
Risk-free interest rate
   
N/A
     
1.8
%
Expected life (years)
   
N/A
     
5.91
 
Dividend yield
   
N/A
     
None