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, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 3,765	$ 765	$ 6,572	$ (2,523)
Cost of sales
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	3,433	666	5,111	4,027
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 332	$ 99	$ 1,461	$ (6,550)