Loss Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Numerator
Net loss	$ (55,868)	$ (8,123)	$ (281,003)	$ (8,407)
Net income and dividends declared allocated to participating securities	0	0	(173)	0
Net loss available to common shareholders	$ (55,868)	$ (8,123)	$ (281,176)	$ (8,407)
Denominator
Weighted average common shares outstanding – basic (in shares)	116,174,306	114,996,783	115,886,832	114,744,363
Dilutive effect of non-participating securities (in shares)	0	0	0	0
Weighted average common and common equivalent shares outstanding – diluted (in shares)	116,174,306	114,996,783	115,886,832	114,744,363
Net loss per common share:
Basic (in dollars per share)	$ (0.48)	$ (0.07)	$ (2.43)	$ (0.07)
Diluted (in dollars per share)	$ (0.48)	$ (0.07)	$ (2.43)	$ (0.07)