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INCOME TAXES - Net Operating Loss Carryback (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jan. 31, 2020
Operating Loss Carryforwards [Line Items] |  |  |
Increase in loss carryback period for certain losses | 5 years |  |
Domestic net operating loss carryback | $ 39,500 |  |
Deferred tax asset |  |  | $ 8,300
Federal corporate income tax rate (as percent) | 21.00% | 21.00% |
Amount of rate difference tax benefit |  | $ 4,286 |
Other current assets |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Income tax receivable | $ 12,700 |  |

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- Definition Represents the increase in loss carryback period for certain losses. + References No definition available. + Details
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