Goodwill and Related Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Balance at	$ 236,044
Acquired goodwill	56,975
Foreign currency translation	(101)
Balance at	292,918
Accumulated impairment losses	255,530	$ 255,530
Residential Products
Goodwill [Roll Forward]
Balance at	181,285
Acquired goodwill	0
Foreign currency translation	0
Balance at	181,285
Industrial and Infrastructure Products
Goodwill [Roll Forward]
Balance at	54,759
Acquired goodwill	0
Foreign currency translation	(393)
Balance at	54,366
RBI
Goodwill [Roll Forward]
Balance at	0
Acquired goodwill	56,975
Foreign currency translation	292
Balance at	$ 57,267