Shareholders' Equity - Stock Option (Incentive and Nonqualified) Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at Jan 31, 2015, Shares	1,913,227
Granted, shares	0
Exercised, shares	0	0
Forfeited or expired shares	(75,925)
Outstanding at August 1, 2015	1,837,302
Vested and expected to vest at August 1, 2015	1,836,958
Exercisable at August 1, 2015	1,830,436
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted-Average Exercise Price, Outstanding at January 31, 2015 (in dollars per share)	$ 4.11
Granted, Weighted-Average Exercise Price (in dollars per share)	0.00
Exercised, Weighted-Average Exercise Price (in dollars per share)	0.00
Forfeited or expired, Weighted-Average Exercise Price (in dollars per share)	12.63
Weighted-Average Exercise Price Outstanding at May 2, 2015 (in dollars per share)	3.75
Vested and expected to vest at May 2, 2015, Weighted-Average Exercise Price (in dollars per share)	3.76
Exercisable at May 2, 2015, Weighted-Average Exercise Price (in dollars per share)	$ 3.76
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding at May 2, 2015, Weighted-Average Remaining Contractual Term	1 year 3 months 20 days
Vested and expected to vest at May 2, 2015, Weighted-Average Remaining Contractual Term	1 year 3 months 20 days
Exercisable at May 2, 2015, Weighted-Average Remaining Contractual Term	1 year 3 months 20 days
Outstanding at May 2, 2015, Aggregate Intrinsic Value	$ 0
Vested and expected to vest at May 2, 2015, Aggregate Intrinsic Value	0
Exercisable at May 2, 2015, Aggregate Intrinsic Value	$ 0