Geographic, Segment And Significant Customer Information (Schedule of Revenue by Geographic Area) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Geographical Revenue [Line Items]
Revenues	$ 7,940	$ 9,442
Americas [Member]
Geographical Revenue [Line Items]
Revenues	3,665	3,903
Europe [Member]
Geographical Revenue [Line Items]
Revenues	1,320	2,149
Asia Pacific [Member]
Geographical Revenue [Line Items]
Revenues	$ 2,955	$ 3,390
License Sales Through Channels Of Distributors, Resellers, and Application Service Providers	62.00%