Business Segment and Geographic Data (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net revenues	$ 3,539	$ 11,233
North America [Member]
Net revenues	2,475	7,313
Asia Pacific [Member]
Net revenues		514
Europe (including Israel) [Member]
Net revenues	1,064	3,391
South America [Member]
Net revenues		15
United States [Member]
Net revenues	2,475	6,094
Canada [Member]
Net revenues		$ 695