Discontinued Operations (Summarized Income (Loss) from Discontinued Operations, Net Of Tax) (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2012	Dec. 31, 2011	Jan. 02, 2011
Discontinued Operations [Abstract]
Operating revenues									$ 35,342	$ 118,457	$ 231,388
Operating costs and expenses									(42,583)	(155,720)	(315,031)
Loss from discontinued operations									(7,241)	(37,263)	(83,643)
Benefit from income taxes									(2,068)	(8,433)	(20,769)
Net Loss from Discontinued Operations									(5,173)	(28,830)	(62,874)
Gain (loss) on sales and disposition of discontinued operations									23,759	2,975	(9,156)
(Benefit) provision for income taxes on sales and disposition of discontinued operations									(64,591)	2,616	5,869
Income (Loss) from Discontinued Operations, Net of Tax	$ 0	$ 49,054	$ 16,016	$ 18,107	$ 291	$ (18,788)	$ (5,208)	$ (4,766)	$ 83,177	$ (28,471)	$ (77,899)