Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure [Abstract]
Prepaid expense	$ (2,191)	$ (2,393)
Depreciation	(34,476)	(32,311)
Operating lease right-of-use assets	(250,292)	(260,706)
Other temporary differences	(906)	(1,129)
Gross deferred tax liabilities	(287,865)	(296,539)
Operating lease liabilities	296,413	310,209
Deferred rent	6,685
Inventory	18,279	11,436
Accounts receivable	1,930	1,475
Net operating loss carryforwards	11,359	4,547
Tax uncertainties	1,611	1,336
Accrued salaries and benefits	16,711	17,534
Income tax credits	4,494	4,511
Other temporary differences	15,548	10,050
Gross deferred tax assets, before valuation allowances	373,030	361,098
Valuation allowances	(18,689)	(13,459)
Net deferred tax assets	$ 66,476	$ 51,100

Deferred tax assets operating lease ROU assets.

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Deferred Tax Assets Tax Uncertainties

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements.

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Amount of deferred tax liability attributable to taxable temporary differences classified as other.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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