Stockholders' Equity and Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Stockholders' Equity and Earnings Per Share [Abstract]

Schedule of earnings per share calculations

The following table presents the EPS calculations for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ and shares in thousands, except per share data)	2017		2016		2017		2016
Basic
Net income	$	132,660	$	110,143	$	420,726	$	320,943
Basic weighted average number of shares outstanding	144,498		144,122		144,412		144,061
Basic EPS	$	0.92	$	0.76	$	2.91	$	2.23
Diluted
Net income	$	132,660	$	110,143	$	420,726	$	320,943
Basic weighted average number of shares outstanding	144,498		144,122		144,412		144,061
Diluted potential common shares (1)	1,384		1,116		1,437		1,025
Diluted weighted average number of shares outstanding	145,882		145,238		145,849		145,086
Diluted EPS	$	0.91	$	0.76	$	2.88	$	2.21

(1) Includes dilutive shares from RSUs and warrants for the three and nine months ended September 30,2017 and 2016.