Income Taxes (Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current, Federal	$ 135,232	$ 138,221	$ 94,984
Current, State	12,177	6,919	5,201
Current, Foreign	5,776	4,486	1,395
Total Current	153,185	149,626	101,580
Deferred, Federal	104,723	(18,428)	(10,665)
Deferred, State	(12,201)	(1,361)	22,690
Deferred, Foreign	(1,121)	963	(5,586)
Total, Deferred	91,401	(18,826)	6,439
Total Current and Deferred	$ 244,586	$ 130,800	$ 108,019