Geographic Information (Geographical Distribution Of Long-Lived Assets, Net) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 6,288	$ 6,606
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	4,570	4,640
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	1,195	1,413
Other - primarily United Kingdom and Indonesia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 523	$ 553