Debt - Interest Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Oct. 31, 2021 |
Oct. 31, 2020 |
Oct. 31, 2021 |
Oct. 31, 2020 |
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| Debt Disclosure [Abstract] | ||||
| Interest expense at coupon rate | $ 0 | $ 1,930 | $ 3,182 | $ 3,411 |
| Amortization of debt discounts and issuance costs | 0 | 47 | 84 | 83 |
| Total interest expense | $ 0 | $ 1,977 | $ 3,266 | $ 3,494 |
| X | ||||||||||
- Definition Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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