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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2014
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Income Per Common Share | The following table sets forth the computation of basic and diluted income per common share for the periods presented (dollars and shares in thousands, except per share data).
| Three Months Ended June 30 |  | Six Months Ended June 30
| 2014 |  | 2013 |  | 2014 |  | 2013
Numerator: |  |  |  |  |  |  |
Net income | $ | 99,557 |  |  | $ | 66,252 |  |  | $ | 189,643 |  |  | $ | 128,546 |
Less: distributed and undistributed earnings allocated to participating securities | (1,514 | ) |  | — |  |  | (2,918 | ) |  | — |
Net income attributable to common shareholders | $ | 98,043 |  |  | $ | 66,252 |  |  | $ | 186,725 |  |  | $ | 128,546 |
Denominator: |  |  |  |  |  |  |
Weighted average basic common shares outstanding | 96,906 |  |  | 96,432 |  |  | 96,847 |  |  | 96,424 |
Effect of dilutive securities | 8 |  |  | 1,062 |  |  | 34 |  |  | 1,037 |
Diluted common shares outstanding | 96,914 |  |  | 97,494 |  |  | 96,881 |  |  | 97,461 |
Basic income per common share | $ | 1.01 |  |  | $ | 0.69 |  |  | $ | 1.93 |  |  | $ | 1.33 |
Diluted income per common share | $ | 1.01 |  |  | $ | 0.68 |  |  | $ | 1.93 |  |  | $ | 1.32 |

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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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