Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 3,292	$ 175	$ (3,288)	$ 604
Residential Products
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	3,251	(182)	(3,329)	145
Industrial and Infrastructure Products
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 41	$ 357	$ 41	$ 459