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Restructuring Activities Restructuring Charges (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]    
Restructuring and Related Cost, Expected Cost Remaining $ 8,300  
Severance Costs 1,340 $ 3,692
Restructuring and Other 3,286 281
Restructuring Charges 4,626 3,973
Cost of Sales [Member]    
Restructuring Cost and Reserve [Line Items]    
Severance Costs 648 2,361
Restructuring and Other 1,826 0
Selling, General and Administrative Expenses [Member]    
Restructuring Cost and Reserve [Line Items]    
Severance Costs 692 1,331
Restructuring and Other 1,460 281
Energy & Chemicals [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring and Related Cost, Expected Cost Remaining 3,000  
Restructuring Charges 426 292
Distribution & Storage [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring and Related Cost, Expected Cost Remaining 1,300  
Restructuring Charges 137 2,193
BioMedical [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring and Related Cost, Expected Cost Remaining 1,300  
Restructuring Charges 2,604 484
Corporate [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring and Related Cost, Expected Cost Remaining 2,700  
Restructuring Charges $ 1,459 $ 1,004