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Pension and Postretirement Benefits - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]      
Assumed health care cost trend rate 7.00% 7.00%  
Decrease in assumed health care cost trend rate 4.50% 4.50%  
Effect of one percentage point increase on accumulated post retirement benefit obligation $ 1,300    
Effect of one percentage point increase in assumed health care cost trend rate on total service and interest cost components 100    
Effect of one percentage point decrease in assumed health care cost trend rate on accumulated post retirement benefit obligation 1,100    
Effect of one percentage point decrease in assumed health care cost trend rate on total service and interest cost components $ 100    
Maximum percentage of funding status of plans in red zone 65.00%    
Maximum percentage of funding status of plans in yellow zone 80.00%    
Maximum percentage of funding status of plans in green zone 80.00%    
401(k) plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Percentage of employer matching contribution with employee gross pay 100.00%    
Percentage of employer matching contribution match with 100 percent 3.00%    
Percentage of employer matching contribution 50.00%    
Percentage of employer matching contribution match with 50 percent 2.00%    
Expense associated with other employee benefit plans $ 3,900 $ 3,700 $ 3,300
US Postretirement and Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Estimated net actuarial loss for pension plans that is expected to be amortized 200    
Estimated prior service credit for postretirement benefit plans 400    
US Postretirement and Pension Plan | Unfunded Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Estimated net actuarial loss for pension plans that is expected to be amortized 100    
US Postretirement and Pension Plan | Funded Plans      
Defined Benefit Plan Disclosure [Line Items]      
Estimated net actuarial loss for pension plans that is expected to be amortized 400    
Foreign Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Estimated net actuarial loss for pension plans that is expected to be amortized (162) (160) 145
Net actuarial losses for the foreign funded plans (before tax) (3,300) (3,300)  
Net actuarial losses for the foreign funded plans (after tax) (2,500) (2,500)  
Net actuarial losses for the foreign unfunded plans (before tax) (400) (400)  
Net actuarial losses for the foreign unfunded plans (after tax) (300) (300)  
Pension Plans | Unfunded Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Amount expected to contribute in unfunded pension plans 900    
Pension Plans | Funded Plans      
Defined Benefit Plan Disclosure [Line Items]      
Amount expected to contribute in funded pension plans 1,600    
US Postretirement Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Estimated prior service credit for postretirement benefit plans 503 $ 552 $ 593
Amount expected to contribute in postretirement benefit plans $ 1,100