Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Total	$ 5,240	$ 293
Exit activity costs (recoveries), net	4,047	293
Cost of sales
Restructuring Cost and Reserve [Line Items]
Total	5,047	69
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Total	$ 193	$ 224