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Computation of Basic and Diluted Net Income (Loss) per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Oct. 30, 2021
Oct. 31, 2020
Oct. 30, 2021
Oct. 31, 2020
Basic net income (loss) per share        
Net income (loss) $ 13,619 $ 8,016 $ 287,203 $ (372,493)
Weighted average number of common shares – basic 66,740 66,083 66,591 65,867
Net income (loss) per common share – basic $ 0.20 $ 0.12 $ 4.31 $ (5.66)
Diluted net income (loss) per share        
Net income (loss) $ 13,619 $ 8,016 $ 287,203 $ (372,493)
Weighted average number of common shares – basic 66,740 66,083 66,591 65,867
Assumed exercise of stock options and vesting of restricted stock 577 637 666  
Assumed conversion of convertible debt 888   971  
Weighted average number of common shares – diluted 68,205 66,720 68,228 65,867
Net income (loss) per common share - diluted $ 0.20 $ 0.12 $ 4.21 $ (5.66)