Quarterly report pursuant to Section 13 or 15(d)

Short Term Investments

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Short Term Investments
9 Months Ended
Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]  
Short Term Investment
(3)
Short Term Investments
 
The following table summarizes the available-for-sale investments held as of September 30, 2018. There were no available-for-sale investments in prior periods.
 
Description
 
Fair

Value
 
September 30, 2018
 
 
 
 
U.S. government agency securities and treasuries
 
$
78,625,000
 
 
The amortized cost of the available-for-sale investments is adjusted for amortization of premiums and accretion of discounts to maturity. There were no material realized gains or losses recognized on the sale or maturity of available-for-sale investments during the three or nine months ended September 30, 2018.