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Property And Equipment (Property And Equipment) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Property And Equipment [Abstract]    
Land $ 3,160 $ 3,160
Buildings and improvements 6,800 6,800
Furniture and fixtures 4,140 3,822
Computer hardware and software 4,975 4,897
Machinery and equipment 20,500 19,764
Construction in progress 741 721
Property and equipment, gross 40,316 39,164
Less accumulated depreciation (15,933) (14,819)
Property and equipment $ 24,383 $ 24,345