Investments in Marketable Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Investments In Marketable Securities Details Narrative Abstract
Realized gain (loss)	$ (400)	$ (328)
Unrealized gain (loss)	(117)	240
Dividend income	158	111
Total Marketable Securities	$ (359)	$ 23