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Net Income Per Share (Tables) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Reconciliation of Weighted Average Common Shares Outstanding | A reconciliation of weighted average shares outstanding used to calculate basic net income per share and diluted net income per share follows (in thousands, except per share data):
| Three months ended March 31
| 2019 |  | 2018
Weighted average shares outstanding (basic) | 169,884 |  |  | 175,303 |
Impact of common stock equivalents | 1,025 |  |  | 1,265 |
Weighted average shares outstanding (diluted) | 170,909 |  |  | 176,568 |
Per share: |  |  |
Basic | 0.33 |  |  | 0.28 |
Diluted | 0.33 |  |  | 0.28 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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