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EMPLOYEE BENEFIT PLANS (Details 4) (Nonunion Defined Benefit Pension Plan, USD $) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
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Dec. 31, 2012 | Jan. 02, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Maximum | Dec. 31, 2012 Minimum | Dec. 31, 2012 Cash and Cash Equivalents | Dec. 31, 2011 Cash and Cash Equivalents | Dec. 31, 2012 Debt Instruments | Dec. 31, 2011 Debt Instruments | Dec. 31, 2012 Floating Rate Loan | Dec. 31, 2011 Floating Rate Loan | Dec. 31, 2012 Large Cap U.S. Equity | Dec. 31, 2011 Large Cap U.S. Equity | Dec. 31, 2012 Mid Cap U.S. Equity | Dec. 31, 2011 Mid Cap U.S. Equity | Dec. 31, 2012 Small Cap U.S. Equity | Dec. 31, 2011 Small Cap U.S. Equity | Dec. 31, 2012 International Equity | Dec. 31, 2011 International Equity | Dec. 31, 2012 Emerging Market Equity | Dec. 31, 2011 Emerging Market Equity | Dec. 31, 2012 Level 1 | Dec. 31, 2011 Level 1 | Dec. 31, 2012 Level 1 Cash and Cash Equivalents | Dec. 31, 2011 Level 1 Cash and Cash Equivalents | Dec. 31, 2012 Level 1 Floating Rate Loan | Dec. 31, 2011 Level 1 Floating Rate Loan | Dec. 31, 2012 Level 1 Large Cap U.S. Equity | Dec. 31, 2011 Level 1 Large Cap U.S. Equity | Dec. 31, 2012 Level 1 Mid Cap U.S. Equity | Dec. 31, 2011 Level 1 Mid Cap U.S. Equity | Dec. 31, 2012 Level 1 Small Cap U.S. Equity | Dec. 31, 2011 Level 1 Small Cap U.S. Equity | Dec. 31, 2012 Level 1 International Equity | Dec. 31, 2011 Level 1 International Equity | Dec. 31, 2012 Level 1 Emerging Market Equity | Dec. 31, 2011 Level 1 Emerging Market Equity | Dec. 31, 2012 Level 2 | Dec. 31, 2011 Level 2 | Dec. 31, 2012 Level 2 Debt Instruments | Dec. 31, 2011 Level 2 Debt Instruments | Dec. 31, 2012 Level 2 Mortgage-backed instruments | Dec. 31, 2012 Level 2 Corporate debt securities | Dec. 31, 2011 Level 2 Corporate debt securities | Dec. 31, 2012 Level 2 Treasury instruments | Dec. 31, 2012 Level 2 Municipal debt securities | Dec. 31, 2011 Level 2 Municipal debt securities | Dec. 31, 2012 Level 2 Asset-backed securities | Dec. 31, 2011 Level 2 Asset-backed securities
Employee Benefit Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets | $ 181,225,000 |  | $ 161,249,000 | $ 180,351,000 |  |  | $ 5,752,000 | $ 21,837,000 | $ 40,556,000 | $ 26,839,000 | $ 7,244,000 | $ 6,523,000 | $ 58,210,000 | $ 50,190,000 | $ 20,226,000 | $ 16,560,000 | $ 20,044,000 | $ 16,949,000 | $ 20,046,000 | $ 13,458,000 | $ 9,147,000 | $ 8,893,000 | $ 140,669,000 | $ 134,410,000 | $ 5,752,000 | $ 21,837,000 | $ 7,244,000 | $ 6,523,000 | $ 58,210,000 | $ 50,190,000 | $ 20,226,000 | $ 16,560,000 | $ 20,044,000 | $ 16,949,000 | $ 20,046,000 | $ 13,458,000 | $ 9,147,000 | $ 8,893,000 | $ 40,556,000 | $ 26,839,000 | $ 40,556,000 | $ 26,839,000 |  |  |  |  |  |  |  |
Percentage of investments in debt instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34.00% | 33.00% | 83.00% | 23.00% | 5.00% | 14.00% | 5.00% | 3.00%
Estimated contribution in next fiscal year |  |  |  |  | $ 10,000,000 | $ 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted funding target attainment percentage |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted funding target attainment percentage to be maintained |  |  |  |  |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the adjusted funding target attainment percentage for the plan as of the valuation date. + References No definition available. + Details
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- Definition Represents the adjusted funding target attainment percentage that the entity intends to make contributions to the plan to maintain. + References No definition available. + Details
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- Definition Represents the percentage of the entity's defined benefit pension plan investments in debt instruments that belong to a particular class or type of security. + References No definition available. + Details
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- Definition The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph g -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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- 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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