Earnings per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended			9 Months Ended
	Nov. 23, 2012	Feb. 24, 2012	Nov. 25, 2011	Nov. 23, 2012 Promissory Note [Member]	Nov. 23, 2012 Line of Credit with PNC Bank [Member]	Nov. 23, 2012 Series D Preferred Stock [Member]	Sep. 28, 2012 Series D Preferred Stock [Member]	Feb. 24, 2012 Series D Preferred Stock [Member]	Nov. 23, 2012 Series D Preferred Stock [Member] Issued in April 2009 [Member]	Feb. 24, 2012 Series D Preferred Stock [Member] Issued in April 2009 [Member]	Nov. 23, 2012 Series D Preferred Stock [Member] Issued in July 2009 [Member]	Feb. 24, 2012 Series D Preferred Stock [Member] Issued in July 2009 [Member]	Nov. 23, 2012 Series D Preferred Stock [Member] Issued in October 2010 [Member]	Feb. 24, 2012 Series D Preferred Stock [Member] Issued in October 2010 [Member]	Nov. 23, 2012 Series E Preferred Stock [Member]	Feb. 24, 2012 Series E Preferred Stock [Member]	Jul. 02, 2009 Series E Preferred Stock [Member]	Nov. 23, 2012 Series E Preferred Stock [Member] Issued in July 2009 [Member]	Feb. 24, 2012 Series E Preferred Stock [Member] Issued in July 2009 [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Number of classes of common stock	1
Number of classes of cumulative participating preferred stock	2
Conversion basis of preferred stock	one-for-one
Cumulative convertible participating Preferred Stock	$ 12,127	$ 22,127				$ 0	$ 386	$ 386							$ 12,127	$ 21,741
Amount of preferred stock being converted									55	55	100	100	231	231				21,741	21,741
Exercise price of convertible preferred stock (in dollars per share)	$ 2								$ 0.94	$ 0.94	$ 1.11	$ 1.11	$ 3.02	$ 3.02				$ 2.00	$ 2.00
Shares issued upon conversion of preferred stock (in shares)	6,063,321								58,511	58,511	90,090	90,090	76,490	76,490	6,063,321		11,870,391	10,870,321	10,870,321
Issuance date of debt				Feb. 20, 2009	Jul. 02, 2009
Amount of promissory note				$ 2,000
Warrants issued (in shares)				200,000	500,000
Warrants to purchase common stock (in shares)				143,885	450,450
Exercise price of warrants (in dollars per share)				$ 1.39	$ 1.11
Outstanding options to purchase the Company's Common Stock (in shares)	240,921		270,921
Outstanding options to purchase the Company's Common Stock average price (in dollars per share)	$ 4.26		$ 4.35