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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Basic And Diluted | The following table reconciles the numerators and denominators used in the calculation of basic and diluted earnings per share (EPS), adjusted for the 2 for 1 stock split effected in the form of a 100% stock dividend issued on December 31, 2014:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Numerators: |  |  |  |  |  |  |
Numerator for both basic and diluted EPS, net income | $ | 74,558,437 |  |  | $ | 76,726,746 |  |  | 151,741,878 |  |  | $ | 145,292,817 |
Denominators: |  |  |  |  |  |  |
Denominator for basic EPS, weighted-average shares outstanding | 293,958,258 |  |  | 290,430,260 |  |  | 294,461,499 |  | 290,119,368 |
Potentially dilutive shares resulting from stock plans | 3,503,844 |  |  | 2,568,726 |  |  | 3,528,533 |  |  | 3,117,810 |
Denominator for diluted EPS | 297,462,102 |  |  | 292,998,986 |  |  | 297,990,032 |  |  | 293,237,178 |
Shares related to stock plans not included in diluted average common shares outstanding because their effect would be anti-dilutive | 1,804,157 |  |  | 5,989,258 |  |  | 1,496,107 |  |  | 1,990,354 |

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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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