Investments in Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of marketable securities

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021			2020
Realized gain (loss)	$	661	$	597	$	1,084		$	544
Unrealized gain (loss)		653		212		(1,395	)		(614	)
Dividend income		484		246		770			259
Interest income		-		-		-			4
	$	1,798	$	1,055	$	459		$	193