Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Segment Information (Details 2) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	$ 38	$ 30	$ 108	$ 95
North America [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	26	24	79	80
U.K. [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	11	5	25	14
Other foreign markets [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	$ 1	$ 1	$ 4	$ 1