Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 331,614	$ 316,157
Accumulated impairment losses, beginning balance	(52,304)	(29,502)
Goodwill, beginning balance	279,310	286,655
Goodwill acquired during the year		15,713
Impairment losses	(2,963)	(22,802)
Final purchase price allocations/contingent payments from prior year acquisitions	1,298
Foreign currency translation adjustment	5	(256)
Goodwill, ending balance	332,917	331,614
Accumulated impairment losses, ending balance	(55,267)	(52,304)
Goodwill, ending balance	277,650	279,310
Office Furniture [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	149,713	149,969
Accumulated impairment losses, beginning balance	(52,161)	(29,359)
Goodwill, beginning balance	97,552	120,610
Goodwill acquired during the year		0
Impairment losses	(2,963)	(22,802)
Final purchase price allocations/contingent payments from prior year acquisitions	0
Foreign currency translation adjustment	5	(256)
Goodwill, ending balance	149,718	149,713
Accumulated impairment losses, ending balance	(55,124)	(52,161)
Goodwill, ending balance	94,594	97,552
Hearth Products [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	181,901	166,188
Accumulated impairment losses, beginning balance	(143)	(143)
Goodwill, beginning balance	181,758	166,045
Goodwill acquired during the year		15,713
Impairment losses	0	0
Final purchase price allocations/contingent payments from prior year acquisitions	1,298
Foreign currency translation adjustment	0	0
Goodwill, ending balance	183,199	181,901
Accumulated impairment losses, ending balance	(143)	(143)
Goodwill, ending balance	$ 183,056	$ 181,758