Operating Leases - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jul. 31, 2020 |
Jul. 31, 2020 |
|
| Leases [Abstract] | ||
| Rent payments | $ 0.3 | $ 0.7 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Cash payments to lessor's for use of assets under operating leases. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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