Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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Equity Incentive Plans - Restricted Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Nov. 01, 2020	Oct. 31, 2021	Nov. 01, 2020	Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 76,000	$ 59,609	$ 207,763	$ 179,755
Unvested restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	400	$ 800	1,600	$ 7,900
Unrecognized stock-based compensation expense	$ 200		$ 200
Compensation cost (in years)			4 months 24 days
Number of Restricted Stock Outstanding
Unvested, Beginning balance (in shares)			557,836
Vested (in shares)			(385,711)
Forfeited/canceled (in shares)			(62,172)
Unvested, Ending balance (in shares)	109,953		109,953
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)			$ 19.06
Vested (in dollars per share)			18.60
Forfeited/canceled (in dollars per share)			20.22
Ending balance (in dollars per share)	$ 20.04		$ 20.04
Aggregate Intrinsic Value	$ 2,953		$ 2,953		$ 12,903