Shareholders' Equity - Stock Option (Incentive and Nonqualified) Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Oct. 31, 2015	Nov. 01, 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	(92,727)
Outstanding at October 31, 2015	1,820,500
Vested and expected to vest at October 31, 2015	1,820,317
Exercisable at October 31, 2015	1,814,257
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)	11.10
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)	3.75
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	11 months 20 days
Vested and expected to vest at May 2, 2015, Weighted-Average Remaining Contractual Term	11 months 20 days
Exercisable at May 2, 2015, Weighted-Average Remaining Contractual Term	11 months 15 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