Annual report pursuant to Section 13 and 15(d)

SHORT-TERM INVESTMENTS

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SHORT-TERM INVESTMENTS
12 Months Ended
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
NOTE 3 — SHORT-TERM INVESTMENTS
 
The following table summarizes the available-for-sale investments held as of December 31, 2018. There were no available-for-sale investments in prior periods.
 
Description
 
Fair value
 
U.S. government and agency securities and treasuries
 
$
66,218,000
 
 
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 year ended December 31, 2018.