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Net Income Per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Net Income Per Share | Net income per share is calculated as follows (in thousands, except per share amounts):
| Fiscal three months ended |  | Fiscal three months ended
| March 31, 2018 |  | April 1, 2017
| Income |  | Shares |  | Per Share Amount |  | Income |  | Shares |  | Per Share Amount
Basic net income per share: | $ | 71,433 |  |  | 124,477 |  |  | $ | 0.57 |  |  | $ | 60,311 |  |  | 130,276 |  |  | $ | 0.46 |
Dilutive effect of share-based awards | — |  |  | 697 |  |  | — |  |  | — |  |  | 814 |  |  | — |
Diluted net income per share: | $ | 71,433 |  |  | 125,174 |  |  | $ | 0.57 |  |  | $ | 60,311 |  |  | 131,090 |  |  | $ | 0.46 |

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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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