Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accounting Policies [Abstract]
Realized losses on marketable securities	$ 10	$ 8	$ 57	$ 61
Unealized losses on marketable securities	17	12	29	45
Dividend income	4	$ 15	17	$ 41
Fair value marketable securities	$ 5,700		$ 5,700		$ 3,400