Reconciliation of Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of earnings per share reconciliation

Years ended December 31,
(in thousands, except per share amounts)			2012					2011					2010
	Net Income		Shares	Per Share Amount		Net Income		Shares	Per Share Amount		Net Income		Shares	Per Share Amount
Basic EPS	$	253,562	72,119	$	3.52	$	259,624	72,056	$	3.60	$	290,807	71,845	$	4.05
Effect of dilutive securities
Stock options			196					270					190
Non-vested restricted stock			1					6					16
Diluted EPS	$	253,562	72,316	$	3.51	$	259,624	72,332	$	3.59	$	290,807	72,051	$	4.04