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Net Income Per Share (Tables) | 9 Months Ended
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Sep. 30, 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 September 30 |  | Nine months ended September 30
| 2019 |  | 2018 |  | 2019 |  | 2018
Weighted average shares outstanding (basic) | 165,324 |  |  | 175,942 |  |  | 167,834 |  |  | 175,672 |
Impact of common stock equivalents | 802 |  |  | 1,186 |  |  | 888 |  |  | 1,176 |
Weighted average shares outstanding (diluted) | 166,126 |  |  | 177,128 |  |  | 168,722 |  |  | 176,848 |
Per share: |  |  |  |  |  |  |
Basic | $ | 0.38 |  |  | $ | 0.37 |  |  | $ | 1.06 |  |  | $ | 0.86 |
Diluted | 0.37 |  |  | 0.37 |  |  | 1.06 |  |  | 0.85 |

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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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