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Restructuring and Impairment Activities (Details) - USD ($)
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]    
Restructuring and impairment expense $ 0 $ 400,000
Restructuring Reserve [Roll Forward]    
Balance at beginning of year 1,400,000 1,700,000
Accruals for announced programs 0 1,300,000
Cash payments (600,000) (3,300,000)
Other 0 1,800,000
Exchange rate impacts 0 (100,000)
Balance at end of period 800,000  
AMS    
Restructuring Cost and Reserve [Line Items]    
Restructuring and impairment expense 0 400,000
EP    
Restructuring Cost and Reserve [Line Items]    
Restructuring and impairment expense 0 0
EP | Philippines | Asset Impairment Charge    
Restructuring Cost and Reserve [Line Items]    
Restructuring and impairment expense $ 0 0
Unallocated    
Restructuring Cost and Reserve [Line Items]    
Restructuring and impairment expense   $ 0