Segment Information - Summarized Financial Information by Reportable Segments (Footnote) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Restructuring and other	$ 2,251		$ 10,831	$ 5,290
Gain on sale of idle properties			0	11,079
Cost of goods sold
Segment Reporting Information [Line Items]
Restructuring and other			700
Non-routine Chilean labor costs		$ 100		600
Selling, general and administrative expenses
Segment Reporting Information [Line Items]
Restructuring and other	2,300		10,400	5,300
Accrual for Environmental Loss Contingencies, Revision in Estimates	3,800		3,800
Write Off Of Uncollectable Accounts Receivable		1,100		1,100
Selling, general and administrative expenses | Financial Improvement Plan [Member]
Segment Reporting Information [Line Items]
Multiemployer plan, period contributions				1,000
Non-controlling Interests
Segment Reporting Information [Line Items]
Restructuring and other			300
Other (expenses) income, net
Segment Reporting Information [Line Items]
Settlement of a legal claim		400	2,500	400
Gain on sale of idle properties			800
Revision of tax indemnification expense			$ 800	900
Unrecoverable Vendor Costs		$ 3,100		$ 3,100
Other expenses, net
Segment Reporting Information [Line Items]
Settlement of a legal claim	$ 200