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Employee Benefits (Details 4) (USD $) In Thousands, unless otherwise specified | Dec. 29, 2012 | Dec. 31, 2011 | Jan. 01, 2011
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Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 100.00% | 100.00% |
Fair value of our plan assets by asset category | $ 67,760 | $ 63,896 | $ 68,725
Equity securities - domestic |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 56.00% | 47.00% |
Equity securities - domestic | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of our plan assets by asset category | 37,623 | 30,179 |
Equity securities - international |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 9.00% | 5.00% |
Equity securities - international | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of our plan assets by asset category | 6,304 | 2,843 |
Fixed income |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 31.00% | 45.00% |
Fixed income | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of our plan assets by asset category | 20,848 | 28,975 |
Other |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 4.00% | 3.00% |
Other | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of our plan assets by asset category | $ 2,985 | $ 1,899 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -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 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -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 132R -Paragraph 5 -Subparagraph b -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(1) -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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