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Property Plant and Equipment, Net (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 96,709us-gaap_PropertyPlantAndEquipmentGross $ 85,155us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation (56,621)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (53,852)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, plant and equipment, net 40,088us-gaap_PropertyPlantAndEquipmentNet 31,303us-gaap_PropertyPlantAndEquipmentNet
Land, Buildings and Improvements    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 46,222us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandBuildingsAndImprovementsMember		 37,048us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandBuildingsAndImprovementsMember
Machinery and Equipment    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 50,487us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember		 $ 48,107us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember