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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Schedule of EPS, Basic and Diluted | The following table sets forth the computation of basic and diluted EPS for the fiscal years ended:
|  | December 31, 2016 |  |  | January 2, 2016 |  |  | January 3, 2015 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Weight Watchers International, Inc. |  | $ | 67,699 |  |  | $ | 32,945 |  |  | $ | 117,787 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares of common stock outstanding |  |  | 63,742 |  |  |  | 58,369 |  |  |  | 56,607 |
Effect of dilutive common stock equivalents |  |  | 2,155 |  |  |  | 597 |  |  |  | 98 |
Weighted average diluted common shares outstanding |  |  | 65,897 |  |  |  | 58,966 |  |  |  | 56,705 |
Earnings per share attributable to Weight Watchers International, Inc. |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.06 |  |  | $ | 0.56 |  |  | $ | 2.08 |
Diluted |  | $ | 1.03 |  |  | $ | 0.56 |  |  | $ | 2.08 |

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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://www.xbrl.org/2003/role/presentationRef -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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