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RESTRUCTURING AND ASSET IMPAIRMENTS - Severance and Retention Costs For RMS Facility by Classification on the Consolidated Statements of Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 30, 2017 | Dec. 31, 2016 | Dec. 26, 2015
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | $ 4,778 | $ 17,879 | $ 8,006
Cost of revenue (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 2,873 | 14,142 | 2,568
Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 1,905 | 3,737 | 5,438
Severance and Transition Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 3,849 | 8,454 | 6,173
Severance and Transition Costs | Cost of revenue (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 1,944 | 4,717 | 735
Severance and Transition Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 1,905 | 3,737 | 5,438
Asset Impairments and Accelerated Depreciation |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 929 | 4,809 | 1,833
Asset Impairments and Accelerated Depreciation | Cost of revenue (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 929 | 4,809 | 1,833
Asset Impairments and Accelerated Depreciation | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 0 | $ 0 | $ 0
RMS |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 18,145 |  |
RMS | Cost of revenue (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 18,078 |  |
RMS | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 67 |  |
RMS | Severance and Transition Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 429 |  |
RMS | Severance and Transition Costs | Cost of revenue (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 362 |  |
RMS | Severance and Transition Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 67 |  |
RMS | Asset Impairments and Accelerated Depreciation |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 17,716 |  |
RMS | Asset Impairments and Accelerated Depreciation | Cost of revenue (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | 17,716 |  |
RMS | Asset Impairments and Accelerated Depreciation | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Expense | $ 0 |  |

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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