Business Segment and Geographic Data (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net revenues		$ 7,258	$ 3,539	$ 29,734
North America [Member]
Net revenues		4,257	2,475	18,376
Asia Pacific [Member]
Net revenues		744		2,180
Europe (including Israel) [Member]
Net revenues		2,246	1,064	9,147
South America [Member]
Net revenues		11		31
United States [Member]
Net revenues		3,528	2,475	15,405
Canada [Member]
Net revenues		$ 277		$ 1,506