SHAREHOLDERS' EQUITY - Additional Information (Detail) (USD $)	9 Months Ended		12 Months Ended	9 Months Ended									3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 27, 2012 Minimum [Member]	Oct. 27, 2012 Maximum [Member]	Oct. 27, 2012 Restricted Stock [Member]	Oct. 29, 2011 Restricted Stock [Member]	Oct. 27, 2012 Restricted Stock Units [Member]	Oct. 27, 2012 Stock Options [Member]	Oct. 27, 2012 Performance Plan [Member]	Oct. 27, 2012 Performance Plan [Member] Restricted Stock [Member]	Oct. 29, 2011 Performance Plan [Member] Restricted Stock [Member]	Oct. 27, 2012 Performance Plan [Member] Restricted Stock Units [Member]	Oct. 29, 2011 Performance Plan [Member] Restricted Stock Units [Member]	Oct. 27, 2012 Performance Plan [Member] Restricted Stock Units [Member]	Oct. 29, 2011 Performance Plan [Member] Restricted Stock Units [Member]	Oct. 27, 2012 Performance Plan [Member] Performance shares [Member]	Oct. 27, 2012 Series B Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock issued to landlords			900,000
Common Stock issued to landlords, fair value			$ 1,600,000
Right to purchase common stock	13,500,000
Exercise price of series B preferred shares																		1.75
Maximum number of shares of the Company's common stock that was available for award grants under the Performance Plan										2,300,000
Termination date of the Performance Plan										Mar. 22, 2015
Vesting period of restricted stock				3 years	4 years						4 years
Period in which stock option expires under condition one				7 years	10 years
Period in which stock option expires under condition	3 months
Stock option expiration conditions									Expire in seven to ten years or three months after termination of employment with the Company
Stock-based awards vesting period	1 year
Weighted-average grant-date fair value per share of options granted	$ 1.71	$ 1.84
Stock options exercised	143,900	70,825
Intrinsic value of stock options exercised	100,000	100,000
Time-based restriction as to vesting											Four years with 25% of the grant vesting each year on the anniversary of the grant date.				Awards generally vest 100% on the first anniversary of the grant date.
Restricted stock award vesting percentage per year											25.00%				100.00%
Weighted-average grant-date fair value granted	$ 1.76							$ 1.57			$ 1.76	$ 3.51
Fair value of awards vested						500,000	900,000								1,770,000	0
Shares which only vest upon the achievement of certain performance-based financial targets	1,505,782							125,000									675,000
Stock-based compensation expense	2,114,000	2,524,000				500,000							600,000	800,000	2,100,000	2,500,000
Compensation cost related to nonvested stock options, restricted stock awards and restricted stock units not yet recognized													$ 3,600,000		$ 3,600,000
Stock-based compensation expense is expected to be recognized over a weighted-average period						2 years 9 months 18 days									2 years 6 months
Percentage of discount in purchasing common stock from fair market value under ESPP	10.00%
Purchasing period of stock under ESPP	6 months
Shares issued under ESPP	114,897	95,798
Average price at which shares issued under ESPP	$ 1.58	$ 2.35