Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Segment Information (Details 2) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	$ 60	$ 41	$ 102	$ 70
North America [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	41	28	72	53
U.K. [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	18	10	28	14
Other foreign markets [Member]
Segment Reporting Information [Line Items]
Total consolidated depreciation and amortization expenses	$ 1	$ 3	$ 2	$ 3