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INVESTMENTS IN MARKETABLE SECURITIES (Tables)
6 Months Ended
Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]  
Gain (Loss) on Investments [Table Text Block]
 
Approximate net realized and unrealized (loss) gain from investments in marketable securities for the three and six months ended June 30, 2018 and 2017 is summarized below:
 
 
 
Three months ended
June 30,
 
Six months ended
June 30,
 
Description
 
2018
 
2017
 
2018
 
2017
 
Net realized gain (loss) from sales of securities
 
$
4,000
 
$
(71,000)
 
$
(4,000)
 
$
(89,000)
 
Unrealized net gain in trading securities
 
 
41,000
 
 
175,000
 
 
28,000
 
 
320,000
 
Total net gain from investments in marketable securities
 
$
45,000
 
$
104,000
 
$
24,000
 
$
231,000