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FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jan. 01, 2017
Sep. 23, 2016
Jun. 24, 2016
Mar. 25, 2016
Dec. 31, 2017
Jan. 01, 2017
Dec. 25, 2015
Fair Value Measurement [Line Items]              
Payment of contingent consideration at acquisition date fair value         $ (18,300) $ 0 $ 0
Other liabilities         2,046 4,182 (2,525)
Goodwill and intangible assets $ 160,800         160,800  
Goodwill and intangible assets, fair value 57,329         57,329  
Goodwill and intangible asset impairment 0 $ (4,275) $ (99,269) $ 0 0 (103,544) $ 0
Significant unobservable inputs (level 3)              
Fair Value Measurement [Line Items]              
Goodwill and intangible assets, fair value $ 57,329         $ 57,329  
SIMOS Insourcing Solutions Corporation              
Fair Value Measurement [Line Items]              
Payment of contingent consideration at acquisition date fair value         (18,300)    
Other liabilities         4,200    
SIMOS Insourcing Solutions Corporation | Contingent Consideration | Significant unobservable inputs (level 3)              
Fair Value Measurement [Line Items]              
Payments for previous acquisition         $ (22,500)