Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment Gross Abstract
Land	$ 8,510	$ 8,346
Building and Improvements	80,644	72,292
Machinery and Equipment	136,549	134,754
Construction In Progress	8,162	9,785
Property, Plant and Equipment, Gross, Total	233,865	225,177
Less: Accumulated Depreciation	(148,377)	(140,065)
Property, Plant and Equipment, Net, Total	$ 85,488	$ 85,112