Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Segment Information (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	$ 32	$ 39	$ 65	$ 78
United States [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	26	33	54	66
Canada [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	1	1	2	2
U.K. [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	5	5	9	10
Other foreign markets [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses