Note 5 - Marketable Securities

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Note

5

–

MARKETABLE SECURITIES

At

December 

31,

2018,

available-for-sale debt securities, consisting entirely of U.S. government securities, are due within

one

year or less by contractual maturity.

For equity securities, in

2018

the Company recorded realized gains of

$72,950

and unrealized losses of $(

181,818

). In

2017

the Company recorded realized gains of

$34,884

and unrealized gains of

$48,738.