Income (Loss) Per Share (Details) $ / shares in Units, $ in Thousands			3 Months Ended						9 Months Ended
	Apr. 22, 2019	Apr. 18, 2019 shares	Nov. 30, 2019 USD ($) $ / shares shares	Aug. 31, 2019 USD ($)	Jun. 01, 2019 USD ($)	Dec. 01, 2018 USD ($) $ / shares shares	Sep. 01, 2018 USD ($)	Jun. 02, 2018 USD ($)	Nov. 30, 2019 USD ($) $ / shares shares	Dec. 01, 2018 USD ($) $ / shares shares	Apr. 17, 2019 shares	Mar. 02, 2019 shares
Numerator:
Net income (loss) from continuing operations | $			$ 52,286			$ (17,250)			$ (125,758)	$ (411,325)
Net (loss) income from discontinued operations | $			(801)			12,740			(1,695)	262,091
Net income (loss) | $			$ 51,485	$ (79,279)	$ (99,659)	$ (4,510)	$ (359,140)	$ 214,416	$ (127,453)	$ (149,234)
Denominator:
Basic weighted average shares | shares			53,310,000			52,920,000			53,159,000	52,824,000
Outstanding options and restricted shares, net (in shares) | shares			274,000
Diluted weighted average shares | shares			53,584,000			52,920,000			53,159,000	52,824,000
Continuing operations									$ (2.37)	$ (7.79)
Discontinued operations									(0.03)	4.96
Net basic and diluted loss per share									(2.40)	(2.83)
Basic income (loss) per share:
Continuing operations			$ 0.98			$ (0.33)			(2.37)	(7.79)
Discontinued operations			(0.01)			0.24			(0.03)	4.96
Net basic income (loss) per share			0.97			(0.09)			(2.40)	(2.83)
Diluted income (loss) per share:
Continuing operations			0.98			(0.33)			(2.37)	(7.79)
Discontinued operations			(0.02)			0.24			(0.03)	4.96
Net diluted income (loss) per share			$ 0.96			$ (0.09)			$ (2.40)	$ (2.83)
Reverse stock split
Reverse stock split ratio	0.05	0.05
Common stock, shares authorized | shares		75,000	75,000,000						75,000,000		1,500,000	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			820,000			1,085,000			1,431,000	1,085,000
Restricted shares
Antidilutive securities excluded from computation of income per share
Shares excluded from the computation of diluted income per share | shares			0			337,000			1,481,000	337,000