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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. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 7,568 | $ 4,778 | $ 17,879
Cost of services provided and products sold (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 950 | 2,873 | 14,142
Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 6,618 | 1,905 | 3,737
Severance and Transition Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 7,520 | 3,849 | 8,454
Severance and Transition Costs | Cost of services provided and products sold (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 923 | 1,944 | 4,717
Severance and Transition Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 6,597 | 1,905 | 3,737
Asset Impairments and Other Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 48 | 929 | 4,809
Asset Impairments and Other Costs | Cost of services provided and products sold (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 27 | 929 | 4,809
Asset Impairments and Other Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 21 | 0 | $ 0
RMS |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 1,983 | 18,145 |
RMS | Cost of services provided and products sold (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 1,669 | 18,078 |
RMS | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 314 | 67 |
RMS | Severance and Transition Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 1,161 | 429 |
RMS | Severance and Transition Costs | Cost of services provided and products sold (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 847 | 362 |
RMS | Severance and Transition Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 314 | 67 |
RMS | Asset Impairments and Other Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 822 | 17,716 |
RMS | Asset Impairments and Other Costs | Cost of services provided and products sold (excluding amortization of intangible assets) |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 822 | 17,716 |
RMS | Asset Impairments and Other Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 0 | $ 0 |

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