Costs Associated with Exit and Restructuring Activities Costs Associated with Exit and Restructuring Activities - June 2016 Plan (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Jun. 03, 2016
Total restructuring, impairment and restructuring related charges
Restructuring charges	$ 240,000	$ 2,084,000
Document Period End Date	Mar. 31, 2020
June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Actual costs incurred	$ 10,530,000
Total restructuring, impairment and restructuring related charges
Restructuring charges	(32,000)	$ 2,332,000
Restructuring Reserve	104,000		$ 233,000
June 2016 Plan | Operating Earnings
Restructuring Cost and Reserve [Line Items]
Planned Costs				$ 13,400,000
Actual costs incurred	15,998,000
Equipment relocation | June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Planned Costs				9,025,000
Other charges | June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Planned Costs				1,300,000
Other charges | June 2016 Plan | Operating Earnings
Restructuring Cost and Reserve [Line Items]
Actual costs incurred	2,156,000
Workforce reduction | June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Planned Costs				$ 3,075,000
Workforce reduction | June 2016 Plan | Operating Earnings
Restructuring Cost and Reserve [Line Items]
Actual costs incurred	$ 3,312,000