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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Calculation of Weighted Average Common Shares Outstanding used in Computation of Diluted Earnings Per Share | The following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share, for the three and six-month periods ended June 30, 2013 and 2012 (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Weighted average basic common shares outstanding | 479,154 |  |  | 461,008 |  |  | 478,494 |  |  | 430,802 |
Effect of dilutive securities |  |  |  |  |  |  |
Restricted stock | — |  |  | 9,499 |  |  | — |  |  | 9,443 |
Convertible preferred stock | — |  |  | 90,133 |  |  | — |  |  | 90,133 |
Weighted average diluted common and potential common shares outstanding | 479,154 |  |  | 560,640 |  |  | 478,494 |  |  | 530,378 |

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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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