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Property And Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Property And Equipment [Abstract]    
Land $ 2,850 $ 2,850
Buildings and improvements 4,924 4,568
Furniture and fixtures 4,264 4,140
Computer hardware and software 4,973 4,759
Machinery and equipment 11,813 11,718
Construction in progress 1,923 1,855
Property and equipment, gross 30,747 29,890
Less accumulated depreciation (13,213) (12,382)
Property and equipment $ 17,534 $ 17,508