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Subsequent Event (Tables) | 12 Months Ended
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Dec. 29, 2012
Business Acquisition [Line Items] |
Schedule of Business Acquisition Pro Forma Information | The following pro forma results include adjustments to reflect additional interest expense to fund the acquisition, amortization of intangibles associated with the acquisition, and the effects of adjustments made to the carrying value of certain assets (in thousands, except per share data:
| December 29, 2012 |  | December 31, 2011
Net sales | $ | 1,074,910 |  |  | $ | 1,001,467 |
Net earnings | 124,167 |  |  | 102,304 |
Net earnings per share: |  |  |  |  |
Basic | 6.80 |  |  | 5.68 |
Diluted | 6.68 |  |  | 5.52 |
Viking [Member] |
Business Acquisition [Line Items] |
Schedule of Business Acquisition Pro Forma Information | Preliminary pro forma results of operations for the nine months ended September 29, 2012 and the full year ended December 31, 2011 for the Viking acquisition assumes the acquisition was completed on January 1, 2011 are as follows:
| September 29, 2012 | December 31, 2011
Net sales | 920,232 |  | 1,075,278 |
Net earnings | 70,217 |  | 79,665 |
Net earnings per share | 3.79 |  | 4.30 |
Basic | 18,237 |  | 17,998 |
Diluted | 18,539 |  | 18,534 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 54 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 55 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph r(2, 3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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