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Leases - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2020
Lessee Lease Description [Line Items] |  |
Finance lease agreements term | 4 years |
Sublease expiration year | 2025 |
Operating leases or finance leases,not yet commenced | $ 0 |
Operating lease not yet commenced, description | We did not have any operating leases or finance leases that have not yet commenced as of January 31, 2021 |
Other Long-term Liabilities |  |
Lessee Lease Description [Line Items] |  |
Asset retirement obligation | $ 3,100,000 | $ 2,800,000
Minimum |  |
Lessee Lease Description [Line Items] |  |
Operating lease expiration year | 2022 |
Total lease term of sublease arrangement | 11 months |
Maximum |  |
Lessee Lease Description [Line Items] |  |
Operating lease expiration year | 2029 |
Total lease term of sublease arrangement | 96 months |

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- Definition Lessee operating lease or financing lease lease not yet commenced. + References No definition available. + Details
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- Definition Lessee operating lease or financing lease lease not yet commenced description. + References No definition available. + Details
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- Definition Non cancellable lease expiration year. + References No definition available. + Details
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- Definition Operating lease expiration year. + References No definition available. + Details
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- Definition Sublease term. + References No definition available. + Details
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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