ACQUISITION ACQUISITION (Policies)	9 Months Ended
ACQUISITION ACQUISITION (Policies)	Sep. 26, 2014
Business Combinations [Abstract]
Acquisition	We account for our business acquisitions using the purchase method of accounting. The fair value of the net assets acquired and the results of the acquired business are included in the financial statements from the acquisition date forward. We are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and results of operations during the reporting period. Estimates are used in accounting for, among other things, the fair value of acquired property and equipment, intangible assets, useful lives of property and equipment and amortizable lives for acquired intangible assets, as well as liabilities for workers' compensation and legal contingencies. Any excess of the purchase consideration over the identified fair value of the assets acquired and liabilities assumed is recognized as goodwill. All acquisition related costs are expensed as incurred and recorded in operating expenses. Additionally, we recognize liabilities for anticipated restructuring costs that will be necessary due to the elimination of excess capacity, redundant assets, or unnecessary functions and record them as operating expenses. We estimate the preliminary fair value of acquired assets and liabilities as of the date of acquisition based on information available at that time. The valuation of these tangible and identifiable intangible assets and liabilities is subject to further management review and may change between the preliminary allocation and the final allocation. Any changes to these estimates may have a material impact on our operating results or financial condition. The excess of the purchase price over the estimated fair values of the net assets acquired was recorded as goodwill and is not deductible for tax purposes.

Disclosure of accounting policy for completed business combinations (purchase method, acquisition method or combination of entities under common control). This accounting policy may include a general discussion of the purchase method or acquisition method of accounting (including for example, the treatment accorded contingent consideration, the identification of assets and liabilities, the purchase price allocation process, how the fair values of acquired assets and liabilities are determined) and the entity's specific application thereof. An entity that acquires another entity in a leveraged buyout transaction generally discloses the accounting policy followed by the acquiring entity in determining the basis used to value its interest in the acquired entity, and the rationale for that accounting policy.

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