Geographic Information (Geographical Distribution Of Long-Lived Assets, Net) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 9,153	$ 7,175
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	7,513	5,407
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	1,143	1,254
Other-Primarily United Kingdom And Indonesia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 497	$ 514