Amount of domestic net operating loss carryback.

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Represents the increase in loss carryback period for certain losses.

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Amount of benefit recognized on rate difference for carryback of net operating losses.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and other tax receivables expected to be realized or consumed within one year or operating cycle, if longer.

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

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INCOME TAXES - Net Operating Loss Carryback (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Jan. 31, 2021	Jan. 31, 2020
Operating Loss Carryforwards [Line Items]
Federal corporate income tax rate (as percent)	21.00%	21.00%	21.00%
Increase in loss carryback period for certain losses	5 years
Domestic net operating loss carryback			$ 39,500
Deferred tax asset				$ 8,300
Amount of rate difference tax benefit		$ 4,175
Other current assets
Operating Loss Carryforwards [Line Items]
Income tax receivable	$ 12,700