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Business Segments (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 29, 2013 segment | Jun. 30, 2012 | Jun. 29, 2013 segment | Jun. 30, 2012
Segment Reporting Information [Line Items] |  |  |  |
Number of Business Segments | 2 |  | 2 |
Net sales | $ 423,593 | $ 436,674 | $ 869,015 | $ 823,782
Rendering [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 350,597 | 371,481 | 717,771 | 693,793
Fat [Member] | Rendering [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 186,300 | 226,100 | 385,500 | 420,100
Protein [Member] | Rendering [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 138,100 | $ 121,300 | $ 277,000 | $ 224,800

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Details
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