Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jul. 31, 2021 |
Jan. 31, 2021 |
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| Goodwill And Intangible Assets Disclosure [Abstract] | ||
| Goodwill impairment | $ 0 | $ 0 |
| Future estimated amortization expense | $ 622,000 | $ 1,272,000 |
| X | ||||||||||
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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