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RESTRUCTURING AND ASSET IMPAIRMENT - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 24 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Dec. 29, 2018
Dec. 30, 2017
Restructuring Cost and Reserve [Line Items]        
Restructuring costs $ 1,549 $ 638    
Severance and other personnel related costs liability and lease obligation liabilities 2,113 7,053 $ 2,921 $ 6,856
Accrued Compensation        
Restructuring Cost and Reserve [Line Items]        
Severance and other personnel related costs liability and lease obligation liabilities 1,800 3,100    
RMS        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs 301 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 400 616    
Severance and Transition Costs | Other Noncurrent Liabilities        
Restructuring Cost and Reserve [Line Items]        
Severance and other personnel related costs liability and lease obligation liabilities $ 300 $ 3,900    
Severance and Transition Costs | RMS        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs     $ 1,200