Reportable Segment Information (Net Sales By Product Category) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Revenue from External Customer [Line Items]
Net sales	$ 541,263	$ 565,706	$ 510,698	$ 442,297	$ 527,536	$ 550,855	$ 480,400	$ 445,212	$ 500,269	$ 504,220	$ 432,810	$ 396,151	$ 2,059,964	$ 2,004,003	$ 1,833,450
Systems and Storage [Member]
Revenue from External Customer [Line Items]
Net sales													1,132,885	1,126,272	1,072,629
Seating [Member]
Revenue from External Customer [Line Items]
Net sales													469,220	452,923	399,264
Other [Member]
Revenue from External Customer [Line Items]
Net sales													83,100	108,107	56,157
Hearth Products [Member]
Revenue from External Customer [Line Items]
Net sales													$ 374,759	$ 316,701	$ 305,400