Business Segment and Geographic Data (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net revenues	$ 38,397	$ 75,890
North America [Member]
Net revenues	22,007	51,092
Asia Pacific [Member]
Net revenues	3,837	3,988
Europe (including Israel) [Member]
Net revenues	12,522	20,544
South America [Member]
Net revenues	31	266
United States [Member]
Net revenues	17,839	45,105
Canada [Member]
Net revenues	1,698	5,353
Japan [Member]
Net revenues	$ 1,060	$ 387