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Net Income Per Share - Additional Information (Detail) - shares
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]      
Anti-dilutive shares excluded from diluted net income per share 405,000 425,000  
Maximum      
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]      
Anti-dilutive shares excluded from diluted net income per share     150,000