Income Taxes (Reconciliation Of Effective Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Tax provision computed at the federal statutory income tax rate	$ 65,212	$ 76,134	$ 64,579
State and local income taxes, net of federal tax benefits	3,587	3,790	2,727
Nondeductible lobbying	865	882	1,039
Foreign tax rate difference	2,027	587	442
Investment in Subsidiaries	(9,338)	0	0
Change in deferred tax valuation allowance	21,846	0	0
Other	457	967	482
Total provision	$ 84,656	$ 82,360	$ 69,269
Effective tax rate	45.40%	37.90%	37.50%