Geographic Information and Major Customer and Product Data (Details 1) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		$ 453	$ 626
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	[1]	181	206
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	[1]	236	330
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	[1]	$ 36	$ 90

[1] Long-lived assets are comprised of property and equipment, net.