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Net Income Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Calculation of Net Income Per Share | The calculation of net income per share for the three months ended March 31, 2021 and 2020, is reflected in the following table (in thousands, except per share amounts):
| Three Months Ended March 31,
| 2021 |  | 2020
Net income | $ | 110,598 |  |  | $ | 89,915 |
Basic: |  |  |
Weighted average shares | 111,424 |  |  | 113,187 |
Diluted: |  |  |
Weighted average shares | 111,424 |  |  | 113,187 |
Dilutive effect of potential common shares | 1,072 |  |  | 671 |
Diluted weighted average shares | 112,496 |  |  | 113,858 |
Net income per share: |  |  |
Basic | $ | .99 |  |  | $ | .79 |
Diluted | $ | .98 |  |  | $ | .79 |

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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