Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Total	$ 1,010	$ 2,136	$ 1,301	$ 2,355
Exit activity costs	664	2,136	955	2,355
Cost of sales
Restructuring Cost and Reserve [Line Items]
Total	786	319	873	285
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Total	$ 224	$ 1,817	$ 428	$ 2,070