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Rationalizations Rationalization Text (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
metric_tons
Dec. 31, 2012
Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]      
Restructuring and Related Cost, Incurred Cost $ 20,156,000 $ 0 $ 0
Estimated Reduction in Capacity 60,000    
Restructuring Costs and Asset Impairment Charges 8,010,000    
Restructuring and Related Cost, Expected Cost 100,000,000    
Restructuring and Related Cost, Expected Number of Positions Eliminated 600    
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent   20.00%  
Restructuring and related - expected cash outlays 30,000,000    
Expected Rationalization Charges For Following Year 70,000,000    
Restructuring Charges 65,702,000    
Restructuring Reserve, Accelerated Depreciation 28,326,000    
Restructuring and related charges to inventory 9,000,000    
Restructuring and related severance costs 19,346,000    
Industrial Materials [Member]
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Costs and Asset Impairment Charges 5,736,000    
Restructuring and related severance and contract termination costs 19,400,000    
Restructuring Charges 61,765,000    
Restructuring Reserve, Accelerated Depreciation 28,326,000    
Restructuring and related charges to inventory 8,000,000    
Restructuring and related severance costs 18,579,000    
Engineered Solutions [Member]
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Costs and Asset Impairment Charges 2,274,000    
Restructuring and Related Cost, Expected Cost 4,500,000    
Restructuring and Related Cost, Expected Number of Positions Eliminated 40    
Restructuring and related - expected cash outlays 1,000,000    
Expected Rationalization Charges For Following Year 3,500,000    
Restructuring Charges 3,937,000    
Restructuring Reserve, Accelerated Depreciation 0    
Restructuring and related charges to inventory 1,000,000    
Restructuring and related severance costs $ 767,000