Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Summary of Dividend and Other Investment Income (Loss), Net

The following is a summary of Dividend and Other Investment Income (Loss), net, as of March 31, 2018 and 2017:

	Three Months Ended
	3/31/2018			3/31/2017
Dividend Income	$	2,425,140		$	1,851,240
Gain on Sales of Marketable Securities, net		20,107			31,891
Changes in Fair Value of Marketable Securities		(25,898,819	)		-0-
Total Dividend and Other Investment Income (Loss), net	$	(23,453,572	)	$	1,883,131