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Net Income Per Share (Tables) | 12 Months Ended
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Dec. 30, 2017
Earnings Per Share [Abstract] |
Net income per share calculation | Net income per share is calculated as follows (in thousands, except per share amounts):
| 2017
| Net Income |  | Shares |  | Per Share Amount
Basic net income per share | $ | 422,599 |  |  | 127,588 |  |  | $ | 3.31 |
Dilutive stock options and restricted stock units outstanding | — |  |  | 616 |  |  | (0.01 | )
Diluted net income per share | $ | 422,599 |  |  | 128,204 |  |  | $ | 3.30 |
| 2016
| Net Income |  | Shares |  | Per Share Amount
Basic net income per share | $ | 437,120 |  |  | 132,905 |  |  | $ | 3.29 |
Dilutive stock options and restricted stock units outstanding | — |  |  | 908 |  |  | (0.02 | )
Diluted net income per share | $ | 437,120 |  |  | 133,813 |  |  | $ | 3.27 |
| 2015
| Net Income |  | Shares |  | Per Share Amount
Basic net income per share | $ | 410,395 |  |  | 135,582 |  |  | $ | 3.03 |
Dilutive stock options and restricted stock units outstanding | — |  |  | 1,263 |  |  | (0.03 | )
Diluted net income per share | $ | 410,395 |  |  | 136,845 |  |  | $ | 3.00 |

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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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