Costs Associated with Exit and Restructuring Activities Costs Associated with Exit and Restructuring Activities - June 2016 Plan (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018	Jun. 03, 2016
Restructuring Cost and Reserve [Line Items]
Document Period End Date	Jun. 30, 2019
June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Actual costs incurred	$ 9,952
Total restructuring, impairment and restructuring related charges
Restructuring Reserve	501	$ 668
June 2016 Plan | Operating Earnings
Restructuring Cost and Reserve [Line Items]
Planned Costs			$ 13,400
Actual costs incurred	14,989
Equipment relocation | June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Planned Costs			9,025
Other charges | June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Planned Costs			1,300
Other charges | June 2016 Plan | Operating Earnings
Restructuring Cost and Reserve [Line Items]
Actual costs incurred	1,875
Workforce reduction | June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Planned Costs			$ 3,075
Workforce reduction | June 2016 Plan | Operating Earnings
Restructuring Cost and Reserve [Line Items]
Actual costs incurred	$ 3,162