Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]
Total	$ 627	$ 3,983	$ 1,928	$ 6,338
Exit activity costs	468	3,504	1,423	5,859
Cost of sales
Restructuring Cost and Reserve [Line Items]
Total	325	683	1,198	968
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Total	$ 302	$ 3,300	$ 730	$ 5,370