Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities

v3.19.2
Note 4 - Marketable Securities
 6 Months Ended
Jun. 30, 2019
Notes to Financial Statements  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
4.
     
Marketable Securities
 
The available-for-sale marketable securities are primarily comprised of investments in commercial paper, corporate bonds and government securities and consist of the following, measured at fair value on a recurring basis:
 
   
 
 
 
  
Fair Value Measurements as of
June 30
, 2019
Using Inputs Considered as
  
   
Fair Value
    
Level 1
    
Level 2
    
Level 3
  
Commercial paper and corporate bonds
   $
2,994
     $
—
     $
2,994
     $
—
  
Government securities
    
4,998
      
—
      
4,998
      
—
  
Total marketable securities
   $
7,992
     $
—
     $
7,992
     $
—
  
 
Accrued interest receivable on available-for-sale securities is included in amounts receivable and was
$31,000
as of
June 30, 2019.
 
There were
no
transfers of assets between Level
1
and Level
2
of the fair value measurement hierarchy during the
six
months ended
June 30, 2019.
 
Under the terms of the Company’s investment policy, purchases of marketable securities are limited to investment grade governmental and corporate obligations with a primary objective of principal preservation. Maturities of individual securities are less than
one
year and the amortized cost of all securities approximated fair value as of
June 30, 2019.