Segment Information (Details 1) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,660	$ 3,327
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	2	3
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	3	6
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,655	$ 3,318