Annual report pursuant to Section 13 and 15(d)

Note 4 - Marketable Securities (Tables)

v3.20.4
Note 4 - Marketable Securities (Tables)
 12 Months Ended
Dec. 31, 2020
Notes Tables  
Fair Value, Marketable Securities Measured on a Recurring Basis [Table Text Block]
   
 
 
 
  
Fair Value Measurements as of December 31, 2020
Using Inputs Considered as
  
   
Fair Value
    
Level 1
    
Level 2
    
Level 3
  
Commercial paper and corporate bonds
   $
10,678
     $
—
     $
10,678
     $
—
  
Bank certificate of deposit
    
496
      
—
      
496
      
—
  
Government securities
    
8,924
      
—
      
8,924
      
—
  
Total marketable securities
   $
20,098
     $
—
     $
20,098
     $
—
  
   
 
 
 
  
Fair Value Measurements as of December 31, 2019
Using Inputs Considered as
  
   
Fair Value
    
Level 1
    
Level 2
    
Level 3
  
Commercial paper and corporate bonds
   $
1,997
     $
—
     $
1,997
     $
—
  
Government securities
    
1,998
      
—
      
1,998
      
—
  
Total marketable securities
   $
3,995
     $
—
     $
3,995
     $
—