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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the computation of basic and diluted EPS:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | July 1, |  |  | June 30, |  |  | July 1, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weight Watchers International, Inc. |  | $ | 70,720 |  |  | $ | 45,173 |  |  | $ | 109,832 |  |  | $ | 55,825 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares of common stock outstanding |  |  | 66,400 |  |  |  | 64,269 |  |  |  | 65,761 |  |  |  | 64,124 |
Effect of dilutive common stock equivalents |  |  | 3,754 |  |  |  | 3,468 |  |  |  | 4,153 |  |  |  | 3,180 |
Weighted average diluted common shares outstanding |  |  | 70,154 |  |  |  | 67,737 |  |  |  | 69,914 |  |  |  | 67,304 |
Earnings per share attributable to Weight Watchers International, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.07 |  |  | $ | 0.70 |  |  | $ | 1.67 |  |  | $ | 0.87 |
Diluted |  | $ | 1.01 |  |  | $ | 0.67 |  |  | $ | 1.57 |  |  | $ | 0.83 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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