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Indebtedness - Senior Debt Prior Term Loan (Details) - USD ($)
12 Months Ended
Dec. 19, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Nov. 16, 2018
Debt Instrument [Line Items]          
Loss on amendment/refinancing of senior credit agreement $ 900,000 $ 400,000 $ 900,000 $ 1,300,000  
Term loans | Senior Credit Facilities | Federal Funds Effective Swap Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent) 0.50%        
Term loans | Senior Credit Facilities | One-Month LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent) 1.00%        
Term loans | Senior Credit Facilities | London Interbank Offered Rate (LIBOR), Period One          
Debt Instrument [Line Items]          
Interest period which may be elected, shortest 1 month        
Term loans | Senior Credit Facilities | London Interbank Offered Rate (LIBOR), Period Two          
Debt Instrument [Line Items]          
Interest period which may be elected, shortest 2 months        
Term loans | Senior Credit Facilities | London Interbank Offered Rate (LIBOR), Period Three          
Debt Instrument [Line Items]          
Interest period which may be elected, shortest 3 months        
Term loans | Senior Credit Facilities | London Interbank Offered Rate (LIBOR), Period Four          
Debt Instrument [Line Items]          
Interest period which may be elected, shortest 6 months        
Term loans | Purchase Card Program          
Debt Instrument [Line Items]          
Amount outstanding under purchase card programs   $ 2,500,000 $ 2,800,000    
Senior credit facility | Senior Credit Facilities          
Debt Instrument [Line Items]          
Max cash and cash equivalents excluded from Consolidated Leverage Ratio $ 150,000,000        
Weighted-average interest rate of senior credit facilities (as a percent)   4.30%      
Maximum period within which net proceeds should be reinvested 360 days        
Period after end of 360 day period if committed to be reinvested 180 days        
Percentage of capital stock 100.00%        
Percentage of capital stock of material first tier foreign subsidiaries 65.00%        
Consolidated interest coverage ratio 3.50        
Consolidated leverage ratio 3.50        
Consolidated leverage ratio after certain permitted acquisitions 4.00        
Consolidated leverage ratio to repurchase capital stock and pay cash dividends 2.75        
Aggregate amount of repurchases and dividend declarations $ 50,000,000.0        
Additional amount for all such repurchases and dividend declarations after effective date $ 100,000,000        
Percentage of cumulative consolidated net income 50.00%        
Percentage of cumulative consolidated net deficit 100.00%        
Senior credit facility | Revolving loans | Senior Credit Facilities          
Debt Instrument [Line Items]          
Maximum borrowing capacity under financing arrangement $ 900,000,000.0       $ 850,000,000.0
Letters of credit and guarantees | Senior Credit Facilities          
Debt Instrument [Line Items]          
Fronting fees percentage 0.125%        
Foreign credit instrument facility          
Debt Instrument [Line Items]          
Amount of available borrowing capacity   $ 30,100,000      
Foreign line of credit   119,900,000      
Foreign credit instrument facility | Senior Credit Facilities          
Debt Instrument [Line Items]          
Fronting fees percentage 0.25%        
Foreign credit instrument facility | Revolving loans          
Debt Instrument [Line Items]          
Maximum borrowing capacity under financing arrangement $ 150,000,000.0        
Domestic revolving credit facility          
Debt Instrument [Line Items]          
Amount of available borrowing capacity   311,600,000      
Letters of credit issued, amount outstanding   32,000,000      
Foreign line of credit   6,400,000      
Domestic revolving credit facility | Revolving loans          
Debt Instrument [Line Items]          
Maximum borrowing capacity under financing arrangement $ 200,000,000.0        
Trade receivables financing arrangement | Revolving loans          
Debt Instrument [Line Items]          
Maximum borrowing capacity under financing arrangement   50,000,000.0      
China, India, and South Africa | Foreign credit instrument facility          
Debt Instrument [Line Items]          
Foreign line of credit   0      
China, India, and South Africa | Foreign credit instrument facility | Revolving loans          
Debt Instrument [Line Items]          
Maximum borrowing capacity under financing arrangement   $ 20,000,000.0