Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Income Tax Disclosure [Abstract]
Benefit for income taxes at statutory rate	$ (16,163)	$ (18,112)	$ (28,038)
State income taxes, net of federal income tax benefit	(363)	(900)	(1,170)
Valuation allowance	13,271	19,557	28,600
Derivative liability	3,723	2	1,764
Other	329	287	(102)
Total income tax expense	$ 797	$ 834	$ 1,054