Costs Associated with Exit and Restructuring Activities - Restructuring and Restructuring Related Charges of Actual Costs (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 7,448	$ 5,062	$ 4,139
April 2014 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	248	503	0
June2016 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4,284	4,559	4,139
June2016 Plan | Operating Expense
Restructuring charges
Restructuring and Related Cost, Expected Cost	13,400
Restructuring and Related Cost, Cost Incurred to Date	16,030
June2016 Plan | Equipment relocation | Operating Expense
Restructuring charges
Restructuring and Related Cost, Expected Cost	9,025
Restructuring and Related Cost, Cost Incurred to Date	10,534
June2016 Plan | Other charges | Operating Expense
Restructuring charges
Restructuring and Related Cost, Expected Cost	1,300
Restructuring and Related Cost, Cost Incurred to Date	988
June2016 Plan | Workforce reduction | Operating Expense
Restructuring charges
Restructuring and Related Cost, Expected Cost	3,075
Restructuring and Related Cost, Cost Incurred to Date	3,340
April 2014 Plan | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 7,448	$ 5,062	$ 4,139