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Net Income Per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Reconciliation of Weighted Average Common Shares Outstanding | A reconciliation of weighted average shares outstanding used to calculate basic and diluted net income per share follows (in thousands, except per share data):
| Three months ended June 30 |  | Six months ended June 30
| 2021 |  | 2020 |  | 2021 |  | 2020
Weighted average shares outstanding (basic) | 162,785 |  |  | 161,715 |  |  | 162,614 |  |  | 162,582 |
Impact of common stock equivalents | 1,073 |  |  | 552 |  |  | 1,124 |  |  | 744 |
Weighted average shares outstanding (diluted) | 163,858 |  |  | 162,267 |  |  | 163,738 |  |  | 163,326 |
Per share: |  |  |  |  |  |  |
Basic | $ | 0.38 |  |  | $ | 0.24 |  |  | $ | 0.81 |  |  | $ | 0.40 |
Diluted | 0.38 |  |  | 0.24 |  |  | 0.81 |  |  | 0.40 |

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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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