WORKERS' COMPENSATION INSURANCE AND RESERVES - Reconciliation of Workers' Compensation Claims Reserve (Details) (USD $)	Dec. 27, 2013	Dec. 28, 2012
Workers' Compensation Insurance and Reserves [Abstract]
Undiscounted workers’ compensation reserve	$ 234,400,000	$ 216,000,000
Less discount on workers' compensation reserve	19,600,000	20,400,000
Workers' compensation reserve, net of discount	214,800,000	195,600,000
Less current portion	49,942,000	44,652,000
Long-term portion	$ 164,887,000	$ 150,937,000

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Workers' Compensation Liability, Net of Discount

+ References

No definition available.

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- Definition

Current year monetary amount of the change in worker's compensation reserve liability resulting from the discount applied to reduce the reserve to present value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

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-Subparagraph (SX 210.7-03.(a),13(b))

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Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Number 210

-Section 02

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Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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-Section S99

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-Subparagraph (SX 210.9-03.15(5))

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Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Used to reflect the noncurrent portion of the liabilities (due beyond one year; or beyond one operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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