Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended				12 Months Ended
	May 30, 2015	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May 30, 2015	Mar. 04, 2017	Feb. 27, 2016	Feb. 28, 2015
Numerator for income per share:
Income attributable to common stockholders-basic						$ 4,053	$ 165,465	$ 2,109,173
Add back-interest on convertible notes								5,456
Income attributable to common stockholders- diluted						$ 4,053	$ 165,465	$ 2,114,629
Denominator:
Basic weighted average shares						1,044,427	1,024,377	971,102
Outstanding options and restricted shares, net (in shares)						16,399	17,985	21,967
Convertible notes (in shares)								24,792
Diluted weighted average shares						1,060,826	1,042,362	1,017,861
Basic income per share (in dollars per share)		$ 0.06	$ 0.06	$ 0.02	$ 0.02	$ 0.00	$ 0.16	$ 2.17
Diluted income per share (in dollars per share)		$ 0.06	$ 0.06	$ 0.02	$ 0.02	$ 0.00	$ 0.16	$ 2.08
Stock options
Antidilutive securities excluded from computation of earnings per share
Shares excluded from the computation of diluted income per share						3,200	3,464	2,777
8.5% convertible notes due May 2015
Convertible notes due 2015
Convertible notes amount	$ 64,089
Debt instrument, stated interest rate (as a percent)	8.50%				8.50%
Shares issued for EnvisionRx acquisition (in shares)	24,762