Goodwill and Intangible Assets (Schedule of Goodwill) (Details) $ in Thousands	3 Months Ended
	Apr. 01, 2018 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning	$ 138,449
Goodwill, ending	175,870
North American Residential
Goodwill [Line Items]
Goodwill acquired during period	0
Goodwill [Roll Forward]
Goodwill, beginning	2,867
Foreign exchange fluctuations	(8)
Goodwill, ending	2,859
Europe
Goodwill [Line Items]
Goodwill acquired during period	36,503
Goodwill [Roll Forward]
Goodwill, beginning	35,431
Foreign exchange fluctuations	1,000
Goodwill, ending	72,934
Architectural
Goodwill [Line Items]
Goodwill acquired during period	0
Goodwill [Roll Forward]
Goodwill, beginning	100,151
Foreign exchange fluctuations	(74)
Goodwill, ending	100,077
Operating Segments
Goodwill [Line Items]
Goodwill acquired during period	36,503
Goodwill [Roll Forward]
Goodwill, beginning	138,449
Foreign exchange fluctuations	918
Goodwill, ending	$ 175,870