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Weighted-Average Shares (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Calculation of Weighted-Average Shares | Weighted-average shares were calculated as follows (in thousands):
| Three-months Ended |  | Six-months Ended
| June 30, 2019 |  | July 1, 2018 |  | June 30, 2019 |  | July 1, 2018
Basic weighted-average common shares outstanding | 171,318 |  |  | 172,370 |  |  | 171,209 |  |  | 172,825 |
Effect of dilutive stock options | 4,130 |  |  | 4,779 |  |  | 4,319 |  |  | 5,593 |
Weighted-average common and common-equivalent shares outstanding | 175,448 |  |  | 177,149 |  |  | 175,528 |  |  | 178,418 |

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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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