Net Income/(Loss) Per Share (Narrative) (Details) - shares	3 Months Ended		9 Months Ended
	Oct. 30, 2021	Oct. 31, 2020	Oct. 30, 2021	Oct. 31, 2020
Earnings Per Share [Abstract]
Diluted net income per share excluded dilutive unvested share-based awards	0	2,000	0	3,000