Business, Product and Geographical Area Information and Concentration of Risk - Narrative (Details)	12 Months Ended
	Dec. 31, 2019 productionfacilities customer	Dec. 31, 2018 customer	Dec. 31, 2017 customer
United States
Segment Reporting Information
Number of production facilities	12
Canada
Segment Reporting Information
Number of production facilities	1
Workforce Subject to Collective Bargaining Arrangements [Member]
Segment Reporting Information
Concentration risk, percentage	62.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member]
Segment Reporting Information
Concentration risk, percentage	8.00%
Customer Concentration Risk [Member] | Net sales | Largest Customer [Member]
Segment Reporting Information
Concentration risk, percentage	25.00%	25.00%	27.00%
Number of Customers | customer	1	1	1
Customer Concentration Risk [Member] | Net sales | Second Largest Customer [Member]
Segment Reporting Information
Concentration risk, percentage	17.00%	15.00%	12.00%
Customer Concentration Risk [Member] | Trade receivables | Largest Customer [Member]
Segment Reporting Information
Concentration risk, percentage	41.00%	31.00%
Customer Concentration Risk [Member] | Trade receivables | Second Largest Customer [Member]
Segment Reporting Information
Concentration risk, percentage	10.00%	11.00%