STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Details 2) (USD $)	9 Months Ended
	Oct. 27, 2012	Nov. 26, 2011
Other Share-Based Compensation Disclosures
Unrecognized stock-based compensation expense	$ 1,500,000
Weighted average period for recognition of unrecognized stock-based compensation expense	1 year 6 months
Stock options
Number of Shares
Outstanding, beginning of period (in shares)	2,826,949
Granted (in shares)	614,844
Outstanding, end of period (in shares)	1,729,234
Exercisable, end of period (in shares)	681,399
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 7.48
Granted (in dollars per share)	$ 1.93
Outstanding, end of period (in dollars per share)	$ 6.71
Exercisable, end of period (in dollars per share)	$ 11.86
Aggregate Intrinsic Value
Granted	829,000
Outstanding, end of period	900,000
Weighted Average Fair Value
Outstanding, beginning of period (in dollars per share)	$ 3.19
Granted (in dollars per share)	$ 1.15
Outstanding, end of period (in dollars per share)	$ 2.56
Exercisable, end of period (in dollars per share)	$ 4.79
Weighted Average Remaining Contractual Life
Outstanding, end of period	7 years 7 months 2 days
Exercisable, end of period	5 years 4 months 28 days
Stock options | Vested
Number of Shares
Outstanding, beginning of period (in shares)	1,207,311
Canceled (expired) (in shares)	(690,617)
Outstanding, end of period (in shares)	681,399
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 9.91
Canceled (expired) (in dollars per share)	$ 7.31
Outstanding, end of period (in dollars per share)	$ 11.86
Weighted Average Fair Value
Outstanding, beginning of period (in dollars per share)	$ 4.01
Canceled (expired) (in dollars per share)	$ 3.06
Outstanding, end of period (in dollars per share)	$ 4.79
Weighted Average Remaining Contractual Life
Outstanding, end of period	5 years 4 months 28 days
Stock options | Unvested
Number of Shares
Outstanding, beginning of period (in shares)	1,619,638
Canceled (forfeited) (in shares)	(1,021,942)
Outstanding, end of period (in shares)	1,047,835
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 5.67
Canceled (forfeited) (in dollars per share)	$ 5.56
Outstanding, end of period (in dollars per share)	$ 3.36
Aggregate Intrinsic Value
Outstanding, end of period	900,000
Weighted Average Fair Value
Outstanding, beginning of period (in dollars per share)	$ 2.58
Canceled (forfeited) (in dollars per share)	$ 2.50
Outstanding, end of period (in dollars per share)	$ 1.71
Weighted Average Remaining Contractual Life
Outstanding, end of period	9 years 4 days
Restricted stock
Number of Shares
Unvested, beginning of period (in shares)	446,904
Granted (in shares)	1,075,452
Vested (in shares)	(64,745)
Canceled - unvested (forfeited) (in shares)	(118,862)
Unvested, end of period (in shares)	1,338,749
Weighted Average Fair Value
Unvested, beginning of period (in dollars per share)	$ 5.03
Granted (in dollars per share)	$ 1.67
Vested (in dollars per share)	$ 6.62
Canceled - unvested (forfeited) (in dollars per share)	$ 3.75
Unvested, end of period (in dollars per share)	$ 2.37
Other Share-Based Compensation Disclosures
Total fair value of shares vested during the period	$ 400,000	$ 400,000