Income taxes.

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all US and non-US income tax obligations including estimated interest and penalties due beyond one year or the operating cycle, whichever is longer.

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Research tax credit carry forwards expiration period year start.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due beyond one year or the operating cycle, whichever is longer. Alternate captions include income taxes payable, noncurrent.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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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, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Income Taxes [Line Items]
Statutory tax rate	21.00%	21.00%	21.00%
Deferred tax liabilities, not recognized	$ 8,000
Cumulative undistributed earnings of foreign subsidiaries	93,500
Net deferred tax liabilities after valuation allowance	474	$ 656
Valuation allowance	68,047	60,036
Unrecognized tax benefits	20,496	22,628	$ 21,656	$ 30,884
Unrecognized tax benefits that would impact effective tax rate	1,000
Interest expense and penalties related to uncertain tax positions	(500)	50	$ (700)
Noncurrent liabilities related to interest and penalties for uncertain tax positions	100	700
Increased (decreased) unrecognized tax benefits	(2,100)
Long term income taxes payable, including estimated interest and penalties	1,000
Other Long-Term Liabilities [Member]
Income Taxes [Line Items]
Income tax liabilities considered as other long term liabilities	$ 900	$ 3,100
U.S. state tax authorities [Member] \| Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2021
U.S. state tax authorities [Member] \| Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2025
U.S. federal tax authorities [Member] \| Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2022
U.S. federal tax authorities [Member] \| Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2025
Foreign tax authorities [Member] \| Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2018
Foreign tax authorities [Member] \| Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year	2025
California state [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 1,000
Net operating loss carryforwards begin to expire in fiscal year	2040
Research and development credit carryforwards	$ 38,500
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	29,800
Research and development credit carryforwards	$ 28,800
Federal credits begin to expire in fiscal year	2036