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Stockholders' Equity and Earnings Per Share (Tables) | 6 Months Ended
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Jun. 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 six months ended June 30, 2017 and 2016:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
($ and shares in thousands, except per share data) |  | 2017 |  | 2016 |  | 2017 |  | 2016
Basic |  |  |  |  |  |  |  |
Net income |  | $ | 118,330 |  |  | $ | 103,284 |  |  | $ | 288,066 |  |  | $ | 210,800 |
Basic weighted average number of shares outstanding |  | 144,485 |  |  | 144,101 |  |  | 144,368 |  |  | 144,029 |
Basic EPS |  | $ | 0.82 |  |  | $ | 0.72 |  |  | $ | 2.00 |  |  | $ | 1.46 |
Diluted |  |  |  |  |  |  |  |
Net income |  | $ | 118,330 |  |  | $ | 103,284 |  |  | $ | 288,066 |  |  | $ | 210,800 |
Basic weighted average number of shares outstanding |  | 144,485 |  |  | 144,101 |  |  | 144,368 |  |  | 144,029 |
Diluted potential common shares (1) |  | 1,255 |  |  | 977 |  |  | 1,406 |  |  | 944 |
Diluted weighted average number of shares outstanding |  | 145,740 |  |  | 145,078 |  |  | 145,774 |  |  | 144,973 |
Diluted EPS |  | $ | 0.81 |  |  | $ | 0.71 |  |  | $ | 1.98 |  |  | $ | 1.45 |
(1) | Includes dilutive shares from RSUs and warrants for the three and six months ended June 30, 2017 and 2016.

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- Definition Stockholders' Equity and Earnings Per Share [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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