Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 765	$ 662	$ (2,523)	$ 1,266
Residential Products
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	757	487	(2,572)	632
Industrial and Infrastructure Products
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 8	$ 175	$ 49	$ 634