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Net Income (Loss) Per Share - Anti-Dilutive Securities Excluded from Diluted Net Income per Share (Detail) - shares
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share      
Options and restricted stock units were excluded from calculation of diluted net earnings share 360,496 353,770 3,124,779
Stock Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share      
Options and restricted stock units were excluded from calculation of diluted net earnings share 360,496 351,145 2,895,471
Restricted Stock Units      
Antidilutive Securities Excluded from Computation of Earnings Per Share      
Options and restricted stock units were excluded from calculation of diluted net earnings share   2,625 229,308