Components of Debt (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013	Feb. 28, 2012	Mar. 04, 2011	Mar. 15, 2013	May 14, 2013
Debt Instrument [Line Items]
Unamortized premium	11,866	14,174
10.5% Senior subordinated notes due 2017
Debt Instrument [Line Items]
Long-term Debt, interest rate	10.50%	10.50%	10.50%
Long-term Debt, due date	2017	2017	2017
9.0% Senior secured first lien notes due 2019
Debt Instrument [Line Items]
Long-term Debt, interest rate	9.00%	9.00%	9.00%	9.00%
Long-term Debt, due date	2019	2019	2019
8.875% Senior secured second lien notes due 2019
Debt Instrument [Line Items]
Long-term Debt, interest rate	8.875%	8.875%	8.875%		8.875%
Long-term Debt, due date	2019	2019	2019
6.125% Senior secured first lien notes due 2020
Debt Instrument [Line Items]
Long-term Debt, interest rate	6.125%	6.125%	6.125%			6.125%
Long-term Debt, due date	2020	2020	2020
7.75% Senior notes due 2020
Debt Instrument [Line Items]
Long-term Debt, interest rate	7.75%	7.75%	7.75%				7.75%
Long-term Debt, due date	2020	2020	2020