Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 01, 2013	Jun. 02, 2012
Numerator for income (loss) per share:
Net income (loss)	$ 89,662	$ (28,088)
Accretion of redeemable preferred stock	(25)	(25)
Cumulative preferred stock dividends	(2,732)	(2,574)
Income (loss) attributable to common stockholders-basic	86,905	(30,687)
Add back-Interest on convertible notes	1,364
Add back-cumulative preferred stock dividends	2,732
Income (loss) attributable to common stockholders-diluted	$ 91,001	$ (30,687)
Denominator:
Basic weighted average shares	893,871	887,516
Outstanding options and restricted shares, net (in shares)	38,812
Convertible notes (in shares)	24,800
Convertible preferred stock (in shares)	33,605
Diluted weighted average shares	991,088	887,516
Basic income (loss) per share (in dollars per share)	$ 0.10	$ (0.03)
Diluted income (loss) per share (in dollars per share)	$ 0.09	$ (0.03)
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share	49,324	129,369
Stock options
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share	49,324	72,907
Convertible preferred stock
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share		31,662
Convertible notes
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share		24,800
Restricted shares and restricted stock units
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share	0	11,366