Geographic Information (Geographical Distribution Of Long-Lived Assets, Net) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 12,261	$ 11,732
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	10,639	10,065
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	1,200	1,240
Other Geographical [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 422	$ 427