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Selected Quarterly Information (Unaudited) | 12 Months Ended
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Dec. 30, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Information (Unaudited) | 13. Selected Quarterly Information (Unaudited)
|  | 52-Weeks Ended December 30, 2017 |
|  | Quarter Ending |
|  | April 1 |  |  | July 1 |  |  | September 30 |  |  | December 30 |
Net sales |  | $ | 638,546 |  |  | $ | 816,885 |  |  | $ | 743,077 |  |  | $ | 888,496 |
Gross profit |  |  | 372,123 |  |  |  | 477,858 |  |  |  | 433,665 |  |  |  | 499,518 |
Net income |  |  | 237,812 |  |  |  | 170,950 |  |  |  | 147,413 |  |  |  | 138,780 |
Basic net income per share |  | $ | 1.26 |  |  | $ | 0.91 |  |  | $ | 0.79 |  |  | $ | 0.74 |
Diluted net income per share |  | $ | 1.26 |  |  | $ | 0.91 |  |  | $ | 0.78 |  |  | $ | 0.73 |
|  | 53-Weeks Ended December 31, 2016 |
|  | Quarter Ending |
|  | March 26 |  |  | June 25 |  |  | September 24 |  |  | December 31 |
Net sales |  | $ | 624,040 |  |  | $ | 811,609 |  |  | $ | 722,250 |  |  | $ | 860,767 |
Gross profit |  |  | 339,850 |  |  |  | 462,958 |  |  |  | 405,980 |  |  |  | 470,782 |
Net income |  |  | 88,092 |  |  |  | 161,064 |  |  |  | 125,054 |  |  |  | 136,605 |
Basic net income per share |  | $ | 0.46 |  |  | $ | 0.85 |  |  | $ | 0.66 |  |  | $ | 0.73 |
Diluted net income per share |  | $ | 0.46 |  |  | $ | 0.85 |  |  | $ | 0.66 |  |  | $ | 0.72 |
The above quarterly financial data is unaudited, but in the opinion of management, all adjustments necessary for a fair presentation of the selected data for these interim periods presented have been included. These results are not necessarily indicative of future quarterly results, and the table may not foot due to rounding.

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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