Reconciliation of Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Reconciliation

	Three months ended					Three months ended
(in thousands, except per share amounts)	September 30, 2011					September 30, 2010
	Net			Per Share		Net			Per Share
	Income		Shares	Amount		Income		Shares	Amount
Basic EPS	$	87,599	72,068	$	1.22	$	38,304	71,854	$	0.53
Effect of dilutive securities
Stock options			298					199
Non-vested restricted stock			9					17
Diluted EPS	$	87,599	72,375	$	1.21	$	38,304	72,070	$	0.53

	Nine months ended					Nine months ended
(in thousands, except per share amounts)	September 30, 2011					September 30, 2010
	Net			Per Share		Net			Per Share
	Income		Shares	Amount		Income		Shares	Amount
Basic EPS	$	245,192	72,045	$	3.40	$	210,557	71,838	$	2.93
Effect of dilutive securities
Stock options			355					206
Non-vested restricted stock			9					17
Diluted EPS	$	245,192	72,409	$	3.39	$	210,557	72,061	$	2.92