Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 5,044	$ 19,630
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	3,158	3,364
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	899	876
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	715	398
Turkey [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	154	47
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	33	8,945
Malaysia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue		2,880
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue		1,486
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	14	847
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue		509
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	6	222
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 65	$ 56