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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Reconciliation of the average shares outstanding used to compute basic and diluted earnings per share | The following is a reconciliation of the average shares outstanding used to compute basic and diluted earnings per share:
|  | 2014 |  | 2013 |  | 2012
Basic weighted average common shares outstanding |  | 134,934,892 |  |  | 132,894,179 |  |  | 131,447,895 |
Effect of dilutive securities - stock awards |  | 2,416,417 |  |  | 2,436,014 |  |  | 1,869,155 |
Diluted weighted average common shares outstanding |  | 137,351,309 |  |  | 135,330,193 |  |  | 133,317,050 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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