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RESTRUCTURING AND ASSET IMPAIRMENTS - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 24 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018 | Dec. 29, 2018 | Mar. 30, 2019 | Mar. 31, 2018 | Dec. 30, 2017
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring costs | $ 1,685 | $ 1,856 | $ 3,234 | $ 2,494 |  |  |  |
Severance and other personnel related costs liability and lease obligation liabilities | 2,758 | 6,810 | 2,758 | 6,810 | $ 2,921 | $ 2,113 | $ 7,053 | $ 6,856
Accrued Compensation |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Severance and other personnel related costs liability and lease obligation liabilities | 2,700 | 2,600 | 2,700 | 2,600 |  |  |  |
RMS |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring costs | 641 | 0 | 942 | 0 | 20,100 |  |  |
Asset Impairments and Accelerated Depreciation | RMS |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring costs |  |  |  |  | 17,700 |  |  |
Severance and Transition Costs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring costs | 1,311 | 1,856 | 1,711 | 2,472 |  |  |  |
Severance and Transition Costs | Other Noncurrent Liabilities |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Severance and other personnel related costs liability and lease obligation liabilities | $ 100 | $ 4,200 | $ 100 | $ 4,200 |  |  |  |
Severance and Transition Costs | RMS |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring costs |  |  |  |  | $ 1,200 |  |  |

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