Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities (Tables)

v3.20.2
Note 4 - Marketable Securities (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Fair Value, Marketable Securities Measured on a Recurring Basis [Table Text Block]
   
Fair Value Measurements Using Inputs Considered
as of
:
 
   
September
30, 2020
   
December 31, 20
19
 
   
Total
   
Level 1
   
Level 2
   
Level 3
   
Total
   
Level
1
   
Level 2
   
Level
3
 
Government securities
  $
12,827
    $
    $
12,827
    $
    $
1,998
    $
    $
1,998
    $
 
Bank certificates of deposit
   
1,748
     
     
1,748
     
     
     
     
     
 
Commercial paper and corporate bonds
   
6,251
     
     
6,251
     
     
1,997
     
     
1,997
     
 
Total
  $
20,826
    $
    $
20,826
    $
    $
3,995
    $
    $
3,995
    $