Shareholders' Equity - Restricted Stock Awards and Restricted Stock Units - Additional Information (Detail) (USD $)	3 Months Ended
	May 03, 2014	May 04, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 495,000	$ 994,000
Compensation cost related to nonvested stock options, restricted stock awards and restricted stock units not yet recognized	2,000,000
Stock based compensation expense, weighted average period	2 years 2 months 16 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair Value granted (in dollars per share)		$ 1.77
Fair value of awards vested	1,200,000	1,000,000
Granted, Shares	50,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair Value granted (in dollars per share)
Granted, Shares
Performance Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of restricted stock	4 years
Restricted stock award vesting percentage per year	25.00%
Performance Plan [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award vesting percentage per year	100.00%
Stock-based compensation expense	$ 500,000	$ 1,000,000
Performance -based restricted stock awards [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares		675,000
Performance -based restricted stock awards [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair Value granted (in dollars per share)	$ 2.99	$ 2.16