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Weighted Average Common Shares (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Summary of Weighted Average Numbers of Common Shares Used to Compute Basic and Diluted Net Income Per Share | The weighted average number of common shares used to compute basic and diluted net income per share for the quarters and years to date ended September 30, 2018 and 2017 were as follows:
| For the Quarter Ended September 30, |  |  | For the Year to Date Ended September 30, |
| 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Basic common shares outstanding |  | 69,737 |  |  |  | 69,082 |  |  |  | 69,542 |  |  |  | 68,897 |
Common stock equivalents |  | 2,053 |  |  |  | 1,783 |  |  |  | 1,883 |  |  |  | 1,763 |
Diluted common shares outstanding |  | 71,790 |  |  |  | 70,865 |  |  |  | 71,425 |  |  |  | 70,660 |

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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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