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Stock-Based Compensation - Restricted Stock Award Activity (Detail) - Restricted stock and restricted stock unit - 2012 Stock Incentive Plan - USD ($)
12 Months Ended
Jan. 30, 2021
Feb. 01, 2020
Feb. 02, 2019
Share Based Compensation Arrangement By Share Based Payment Award      
Awards, Outstanding - Beginning balance 219,985    
Awards, Granted 6,642    
Awards, Released (113,797)    
Awards, Cancelled (20,580)    
Awards, Outstanding - Ending balance 92,250 219,985  
Weighted-Average Grant Date Fair Value, Outstanding - Beginning balance $ 49.00    
Weighted-Average Grant Date Fair Value, Granted 371.36 $ 129.21 $ 111.38
Weighted-average Grant Date Fair Value, Released 58.96    
Weighted-Average Grant Date Fair Value, Cancelled 43.92    
Weighted-Average Grant Date Fair Value, Outstanding - Ending balance $ 61.04 $ 49.00  
Intrinsic Value, Outstanding $ 43,851,960