(Loss) Income Per Share (Details) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Apr. 18, 2019 shares	Feb. 29, 2020 USD ($) $ / shares shares	Nov. 30, 2019 USD ($) $ / shares	Aug. 31, 2019 USD ($) $ / shares	Jun. 01, 2019 USD ($) $ / shares	Mar. 02, 2019 USD ($) $ / shares shares	Dec. 01, 2018 USD ($) $ / shares	Sep. 01, 2018 USD ($) $ / shares	Jun. 02, 2018 USD ($) $ / shares	Feb. 29, 2020 USD ($) $ / shares shares	Mar. 02, 2019 USD ($) $ / shares shares	Mar. 03, 2018 USD ($) $ / shares shares	Apr. 17, 2019 shares	Mar. 03, 2019 shares
Numerator:
Net loss from continuing operations | $		$ (343,461)	$ 52,286	$ (78,705)	$ (99,339)	$ (255,629)	$ (17,250)	$ (352,348)	$ (41,727)	$ (469,219)	$ (666,954)	$ (349,532)
Net income from discontinued operations, net of tax | $		$ 18,740	$ (801)	$ (574)	$ (320)	$ (17,350)	$ 12,740	$ (6,792)	$ 256,143	17,045	244,741	1,293,002
(Loss) income attributable to common stockholders-basic and diluted | $										$ (452,174)	$ (422,213)	$ 943,470
Denominator:
Basic weighted average shares | shares										53,228,000	52,854,000	52,481,000
Diluted weighted average shares | shares										53,228,000	52,854,000	52,481,000
Continuing operations						$ (4.83)	$ (0.33)	$ (6.67)	$ (0.79)	$ (8.82)	$ (12.62)	$ (6.66)
Discontinued operations						(0.32)	0.24	(0.13)	4.86	0.32	4.63	24.64
Net basic and diluted loss (income) per share						$ (5.15)	$ (0.09)	$ (6.80)	$ 4.07	(8.50)	$ (7.99)	$ 17.98
Basic income (loss) per share:
Continuing operations		$ (6.43)	$ 0.98	$ (1.48)	$ (1.88)					(8.82)
Discontinued operations		0.35	(0.01)	(0.01)						0.32
Net basic income (loss) per share		(6.08)	0.97	(1.49)	(1.88)					(8.50)
Diluted income (loss) per share:
Continuing operations		(6.43)	0.98	(1.48)	(1.88)					(8.82)
Discontinued operations		0.35	(0.02)	(0.01)						0.32
Net diluted income (loss) per share		$ (6.08)	$ 0.96	$ (1.49)	$ (1.88)					$ (8.50)
Reverse stock split
Reverse stock split ratio	0.05
Common stock, shares authorized | shares	75,000,000	75,000,000				75,000,000				75,000,000	75,000,000		1,500,000,000	75,000,000
Stock options
Antidilutive securities excluded from computation of income per share
Shares excluded from the computation of diluted income per share | shares										1,295,000	1,036,000	374,000
Restricted shares
Antidilutive securities excluded from computation of income per share
Shares excluded from the computation of diluted income per share | shares										1,253,000	1,008,000	6,100,000