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Property And Equipment (Property And Equipment) (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Property And Equipment [Abstract]    
Land $ 3,160 $ 3,160
Buildings and improvements 6,889 6,870
Furniture and fixtures 4,635 4,376
Computer hardware and software 4,932 4,863
Machinery and equipment 20,870 21,004
Construction in progress 1,421 1,761
Property and equipment, gross 41,907 42,034
Less accumulated depreciation (18,744) (18,633)
Property and equipment $ 23,163 $ 23,401