Income Taxes (Combined Effective Tax Rate) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Tax Disclosure [Abstract]
Combined Federal And State Effective Income Tax Rates	26.80%	28.80%	23.90%	29.90%