Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share Reconciliation [Abstract]

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

The following table presents a reconciliation of the numerators and denominators of the basic and diluted earnings per share calculations:

	Year Ended December 31,
	2017					2016					2015
	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	$	144,877	55,316	$	2.62	$	73,044	55,249	$	1.32	$	74,479	55,157	$	1.35
Effect of dilutive securities:
Options	—		11			—		11			—		15
RSUs	—		—			—		42			—		37
Diluted EPS
Income available to common stockholders after assumed conversions	$	144,877	55,327	$	2.62	$	73,044	55,302	$	1.32	$	74,479	55,209	$	1.35