Exit Activity Costs and Asset Impairments (Summary Of Exit Activity Costs And Asset Impairments Recorded in the Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 8,213	$ 2,288	$ 5,574
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,176	1,059	767
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,037	$ 1,229	$ 4,807