Income Taxes (Components Of Net Deferred Tax Asset (Liability)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Income Taxes [Abstract]
Accrued employee benefits	$ 31,525	$ 31,682
Bad debt reserve	2,913	2,007
Warranty reserve	6,711	5,836
Inventory	6,911	5,318
Accrued liabilities	12,548	14,225
Derivative instruments	30,873
Other	7,956	10,514
Deferred tax assets	99,437	69,582
Property related	(37,387)	(35,432)
Intangible items	(113,621)	(100,264)
Derivative instruments		(1,821)
Deferred tax liabilities	(151,008)	(137,517)
Net deferred tax asset (liability)	$ (51,571)	$ (67,935)