Computation of Basic and Diluted Net Income per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2022	May 01, 2021
Basic net income per share
Net income		$ 171,030
Weighted average number of common shares – basic	66,281	66,397
Net income per common share - basic	$ 0.24	$ 2.58
Diluted net income per share
Net income		$ 171,030
Weighted average number of common shares – basic	66,281	66,397
Assumed exercise of stock options and vesting of restricted stock		761
Assumed conversion of convertible debt		874
Weighted average number of common shares – diluted	66,645	68,032
Net income per common share - diluted	$ 0.24	$ 2.51