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LONG-TERM DEBT - Debt Redemptions, Repurchases and Extinguishment of Debt (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2019
Sep. 30, 2018
Dec. 29, 2019
Dec. 30, 2018
Jul. 16, 2018
LONG-TERM DEBT          
Gain (loss) on extinguishment of debt, net     $ (2,272) $ 30,577  
Gross gain on extinguishment of debt       $ 68,700  
6.875% senior secured junior lien notes due in 2031          
LONG-TERM DEBT          
Aggregate principal amount of notes issued $ 75,000        
Interest rate (as a percent)     6.875% 6.875% 6.875%
Gain (loss) from debt exchange $ 0        
9.000% senior secured notes due in 2022          
LONG-TERM DEBT          
Debt redeemed through tender offer   $ 344,100   $ 500  
Amount of debt redeemed       75,000  
Debt repurchased       20,000  
9.000% senior secured notes due in 2026          
LONG-TERM DEBT          
Amount of debt redeemed     $ 41,800 5,300  
Debentures          
LONG-TERM DEBT          
Gross gain on extinguishment of debt       68,700  
Write off of unamortized discounts       $ 32,300