Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share Reconciliation [Abstract]

Reconciliation Of Numerators And Denominators Of Basic And Diluted Earnings Per Share

A reconciliation of the numerators and denominators of the basic and diluted earnings per share calculation for income from operations is presented below:

	2012					2011					2010
	Income (Numerator)		Weighted Shares (Denominator)	Per-Share Amount		Income (Numerator)		Weighted Shares (Denominator)	Per-Share Amount		Income (Numerator)		Weighted Shares (Denominator)	Per-Share Amount
	(Amounts and numbers in thousands, except per-share data)
Basic EPS
Income available to common stockholders	$	116,911	54,899	$	2.13	$	191,164	54,825	$	3.49	$	152,198	54,792	$	2.78
Effect of dilutive securities:
Options	0		23			0		20			0		34
Diluted EPS
Income available to common stockholders after assumed conversions	$	116,911	54,922	$	2.13	$	191,164	54,845	$	3.49	$	152,198	54,826	$	2.78