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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Schedule of basic and diluted earnings per common share from continuing operations | The following table presents the calculation of basic and diluted earnings per common share from continuing operations:
|  | Years ended December 31,
|  | 2015 |  | 2014 |  | 2013
|  | (In thousands, except per share amounts)
Earnings per share — Basic: |  |  |  |  |  |
Earnings from continuing operations |  | $ | 305,989 |  |  | 220,225 |  |  | 243,275 |
Less: Distributed and undistributed earnings allocated to nonvested stock |  | (877 | ) |  | (858 | ) |  | (2,173 | )
Earnings from continuing operations available to common shareholders — Basic |  | $ | 305,112 |  |  | 219,367 |  |  | 241,102 |
Weighted average common shares outstanding— Basic |  | 52,814 |  |  | 52,536 |  |  | 51,617 |
Earnings from continuing operations per common share — Basic |  | $ | 5.78 |  |  | 4.18 |  |  | 4.67 |
Earnings per share — Diluted: |  |  |  |  |  |
Earnings from continuing operations |  | $ | 305,989 |  |  | 220,225 |  |  | 243,275 |
Less: Distributed and undistributed earnings allocated to unvested stock |  | (872 | ) |  | (853 | ) |  | (2,159 | )
Earnings from continuing operations available to common shareholders — Diluted |  | $ | 305,117 |  |  | 219,372 |  |  | 241,116 |
Weighted average common shares outstanding— Basic |  | 52,814 |  |  | 52,536 |  |  | 51,617 |
Effect of dilutive equity awards |  | 446 |  |  | 500 |  |  | 454 |
Weighted average common shares outstanding— Diluted |  | 53,260 |  |  | 53,036 |  |  | 52,071 |
Earnings from continuing operations per common share — Diluted |  | $ | 5.73 |  |  | 4.14 |  |  | 4.63 |
Anti-dilutive equity awards and market-based restrictive stock rights not included above |  | 392 |  |  | 161 |  |  | 785 |

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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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