Business Segments and Geographic Data (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net revenues	$ 7,258	$ 17,998	$ 29,734	$ 58,595
North America [Member]
Net revenues	4,257	11,103	18,376	39,827
Asia Pacific [Member]
Net revenues	744	1,147	2,180	3,403
Europe (including Israel) [Member]
Net revenues	2,246	5,716	9,147	15,139
South America [Member]
Net revenues	11	32	31	226
United States [Member]
Net revenues	3,528	10,281	15,405	35,407
Canada [Member]
Net revenues	277	822	1,506	4,420
Japan [Member]
Net revenues	$ 8	$ 190	$ 8	$ 385