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Summary of Quarterly Results (Tables) | 12 Months Ended
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Dec. 26, 2015
Summary of Quarterly Results [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] |
(dollars in thousands, except per share amounts) | Thirteen Weeks Ended
| March 28, 2015 | June 27, 2015 | September 26, 2015 | December 26, 2015
Net sales | $ | 712,426 | $ | 718,380 | $ | 711,879 | $ | 734,063
Gross profit on sales |  | 195,115 |  | 198,919 |  | 194,147 |  | 198,551
Net income |  | 13,323 |  | 16,644 |  | 12,788 |  | 16,575
Basic and diluted earnings per share |  | .50 |  | .62 |  | .48 |  | .61
(dollars in thousands, except per share amounts) | Thirteen Weeks Ended
| March 29, 2014 | June 28, 2014 | September 27, 2014 | December 27, 2014
Net sales | $ | 687,127 | $ | 691,875 | $ | 683,893 | $ | 713,788
Gross profit on sales |  | 186,768 |  | 187,724 |  | 185,677 |  | 192,793
Net income |  | 14,570 |  | 12,602 |  | 13,511 |  | 13,698
Basic and diluted earnings per share |  | .54 |  | .47 |  | .50 |  | .51

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=51825399&loc=d3e1280-108306 + Details
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