Business Segments and Geographic Data (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net revenues	$ 11,233	$ 20,673
North America [Member]
Net revenues	7,313	15,217
Asia Pacific [Member]
Net revenues	514	677
Europe (including Israel) [Member]
Net revenues	3,391	4,664
South America [Member]
Net revenues	15	115
United States [Member]
Net revenues	6,094	13,131
Canada [Member]
Net revenues	$ 695	$ 2,062