FAIR VALUE MEASUREMENTS - General (Details) - USD ($) $ in Thousands	Jan. 28, 2017	Jan. 30, 2016
Quoted Prices in Active Markets (Level 1)
Fair value measurements
Long-term debt	$ 177,331	$ 168,584
Quoted Prices in Active Markets (Level 1) | Second lien senior secured notes
Fair value measurements
Long-term debt	177,331	168,584
Significant Unobservable Inputs (Level 3)
Fair value measurements
Long-term debt	506,689	455,265
Significant Unobservable Inputs (Level 3) | Senior secured credit facility
Fair value measurements
Long-term debt	506,689	455,265
Carrying Value
Fair value measurements
Long-term debt	856,689	862,557
Carrying Value | Second lien senior secured notes
Fair value measurements
Long-term debt	350,000	407,292
Carrying Value | Senior secured credit facility
Fair value measurements
Long-term debt	506,689	455,265
Estimated Fair Value
Fair value measurements
Long-term debt	684,020	623,849
Estimated Fair Value | Second lien senior secured notes
Fair value measurements
Long-term debt	177,331	168,584
Estimated Fair Value | Senior secured credit facility
Fair value measurements
Long-term debt	$ 506,689	$ 455,265