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EQUITY-BASED COMPENSATION - Schedule of compensation expense recognized (Details) - USD ($)
12 Months Ended
Dec. 28, 2016
Dec. 30, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity-based compensation expense $ 5,354,000 $ 16,681,000 $ 165,000
Total income tax benefit recognized related to equity-based compensation 168,000 482,000 4,000
Unit appreciation rights      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity-based compensation expense 0 11,762,000 0
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity-based compensation expense 4,262,000 4,314,000 0
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity-based compensation expense $ 1,092,000 $ 0 $ 0