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Pension and Other Postretirement Benefits - Narrative (Details)
$ in Thousands, € in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2018
USD ($)
Dec. 31, 2019
EUR (€)
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Pension and other postretirement benefits          
Aggregate contributions to qualified and non-qualified pension trusts and payments of pension benefits for unfunded pension plans     $ 9,700 $ 21,500 $ 23,100
Pension Benefits          
Pension and other postretirement benefits          
Expected 2019 aggregate contributions to qualified and non-qualified pension trusts and payments of pension benefits for unfunded pension plans     14,700    
Pace Industry Union-Management Pension Fund          
Pension and other postretirement benefits          
Liability for plan withdrawal $ 1,000        
Multiemployer plan minimum contribution $ 100        
Minimum contribution period 20 years        
Risk Free Interest Rate | Pace Industry Union-Management Pension Fund          
Pension and other postretirement benefits          
Multiemployer plans withdrawal liability measurement input 0.057        
Minimum          
Pension and other postretirement benefits          
Accumulated funding deficiency demand liability     1,000    
Maximum          
Pension and other postretirement benefits          
Accumulated funding deficiency demand liability     $ 1,250    
Netherlands | Scenario, Forecast | Subsequent Event | Dutch Defined Benefit Plan | Pension Benefits          
Pension and other postretirement benefits          
Expected curtailment gain | €   € 1.7