Business Segments and Geographic Data (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net revenues	$ 11,243	$ 19,924	$ 22,476	$ 40,598
North America [Member]
Net revenues	6,806	13,506	14,119	28,725
Asia Pacific [Member]
Net revenues	922	1,579	1,436	2,256
Europe (including Israel) [Member]
Net revenues	3,510	4,760	6,901	9,423
South America [Member]
Net revenues	5	79	20	194
United States [Member]
Net revenues	5,783	11,995	11,877	25,126
Canada [Member]
Net revenues	534	1,511	1,229	3,573
Japan [Member]
Net revenues		$ 104		$ 195