Goodwill and Other Intangible Assets (Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2013
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 317,850
Accumulated impairment losses, beginning balance	(29,502)
Goodwill, beginning balance	288,348
Goodwill acquired	0
Foreign currency translation adjustments	(1,256)
Goodwill, ending balance	316,594
Accumulated impairment losses, ending balance	(29,502)
Goodwill, ending balance	287,092
Office Furniture [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	151,662
Accumulated impairment losses, beginning balance	(29,359)
Goodwill, beginning balance	122,303
Goodwill acquired	0
Foreign currency translation adjustments	(1,256)
Goodwill, ending balance	150,406
Accumulated impairment losses, ending balance	(29,359)
Goodwill, ending balance	121,047
Hearth Products [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	166,188
Accumulated impairment losses, beginning balance	(143)
Goodwill, beginning balance	166,045
Goodwill acquired	0
Foreign currency translation adjustments	0
Goodwill, ending balance	166,188
Accumulated impairment losses, ending balance	(143)
Goodwill, ending balance	$ 166,045