Reconciliation of Earnings Per Share (EPS) Reconciliation of Earnings Per Share (EPS) (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Reconciliation

	Three months ended					Three months ended
(in thousands, except per share amounts)	June 30, 2013					June 30, 2012
	Net			Per Share		Net			Per Share
	Income		Shares	Amount		Income		Shares	Amount
Basic EPS	$	83,067	72,167	$	1.15	$	131,287	72,117	$	1.82
Effect of dilutive securities
Stock options			225					205
Non-vested restricted stock			16					8
Performance share awards			11					—
Diluted EPS	$	83,067	72,419	$	1.15	$	131,287	72,330	$	1.82

	Six months ended					Six months ended
(in thousands, except per share amounts)	June 30, 2013					June 30, 2012
	Net			Per Share		Net			Per Share
	Income		Shares	Amount		Income		Shares	Amount
Basic EPS	$	139,759	72,155	$	1.94	$	188,693	72,110	$	2.62
Effect of dilutive securities
Stock options			164					218
Non-vested restricted stock			10					8
Diluted EPS	$	139,759	72,329	$	1.93	$	188,693	72,336	$	2.61