Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Stockholder's Equity (Tables)

v3.20.2
Note 10 - Stockholder's Equity (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended September 30,

   

Nine Months Ended September 30,

 
   

2020

   

2019

   

2020

   

2019

 

Cost of product sales

  $ 23     $ 32     $ 67     $ 124  

Research and development cost

    24       34       124       168  

General and administrative expense

    473       835       1,841       2,607  

Total

  $ 520     $ 901     $ 2,032     $ 2,899  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
    Three Months Ended September 30,     Nine Months Ended September 30,  
   

2019

   

2019

 
                 

Expected stock volatility

    86.2% - 86.5%       82.3% - 87.5%  

Risk free interest rate

    1.7% - 1.8%       1.7% - 2.6%  

Expected years until exercise

    3.5       1.0 - 4.0  

Dividend yield

    0%       0%