Segment Information (Details 3) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total consolidated identifiable assets	$ 26,876	$ 20,560
North America [Member]
Segment Reporting Information [Line Items]
Total consolidated identifiable assets	13,258	11,566
U.K. [Member]
Segment Reporting Information [Line Items]
Total consolidated identifiable assets	8,941	4,956
Other foreign markets [Member]
Segment Reporting Information [Line Items]
Total consolidated identifiable assets	$ 4,677	$ 4,038