Shareholders' Equity - Stock Option (Incentive and Nonqualified) Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 28, 2012, Shares	2,990,501
Granted, shares	20,500
Exercised, shares	(143,900)	(70,825)	(6,500)
Forfeited or expired shares	(479,053)
Outstanding at February 2, 2013, Shares	2,388,048	2,990,501
Shares, vested and expected to vest at February 2, 2013	2,282,511
Shares, exercisable at February 2, 2013	1,373,324
Weighted-Average Exercise Price, Outstanding at January 28, 2012	$ 6.61
Granted, Weighted-Average Exercise Price	$ 1.71
Exercised, Weighted-Average Exercise Price	$ 1.64
Forfeited or expired, Weighted-Average Exercise Price	$ 12.72
Weighted-Average Exercise Price Outstanding at February 2, 2013	$ 5.66	$ 6.61
Vested and expected to vest at February 2, 2013, Weighted-Average Exercise Price	$ 5.75
Exercisable at February 2, 2013, Weighted-Average Exercise Price	$ 6.96
Outstanding at February 2, 2013, Weighted-Average Remaining Contractual Term	3 years 7 months 6 days
Vested and expected to vest at February 2, 2013, Weighted-Average Remaining Contractual Term	3 years 6 months
Exercisable at February 2, 2013, Weighted-Average Remaining Contractual Term	3 years 1 month 6 days
Outstanding at February 2, 2013, Aggregate Intrinsic Value	$ 61
Vested and expected to vest at February 2, 2013, Aggregate Intrinsic Value	58
Exercisable at February 2, 2013, Aggregate Intrinsic Value	$ 46