Schedule of Lease Amounts Paid to Related Parties (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Related Party Transaction [Line Items]
Amount Charged on Leased Premises	$ 25	$ 44	$ 50	$ 125
Lease Amounts [Member] | Foster City, CA [Member] | Senior Officers of HGI [Member]
Related Party Transaction [Line Items]
Amount Charged on Leased Premises	0	19	0	76
Lease Amounts [Member] | Edwardsville, IL [Member] | Senior Officer of NLEX [Member]
Related Party Transaction [Line Items]
Amount Charged on Leased Premises	$ 25	$ 25	$ 50	$ 49