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Leases - Additional Information (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Nov. 01, 2019 | Oct. 31, 2019
Lessee Lease Description [Line Items] |  |  |  |
Operating lease ROU asset | $ 10,276,000 |  | $ 10,100,000 |
Operating lease liability | 10,615,000 |  | 10,300,000 |
Adoption of new lease accounting standard, impact on accumulated deficit |  |  | 0 |
Finance lease ROU assets | $ 100,000 |  |  |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:PropertyPlantAndEquipmentNet |  |  |
Finance lease, liability | $ 111,000 |  |  |
Finance Lease, Liability, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesNoncurrent |  |  |
Operating lease expense | $ 156,000 | $ 0 |  |
Operating lease, weighted average remaining lease term | 20 years |  |  |
Operating lease, weighted average discount rate | 6.20% |  |  |
Operating lease, payments | $ 211,000 | 0 |  |
Long-term non-cancelable operating leases, Fiscal Year 2020 |  |  |  | $ 1,100,000
Long-term non-cancelable operating leases, Fiscal Year 2021 |  |  |  | 1,400,000
Long-term non-cancelable operating leases, Fiscal Year 2022 |  |  |  | 1,300,000
Long-term non-cancelable operating leases, Fiscal Year 2023 |  |  |  | 900,000
Long-term non-cancelable operating leases, Fiscal Year 2024 |  |  |  | 700,000
Long-term non-cancelable operating leases, Thereafter |  |  |  | 14,600,000
Long-term non-cancelable operating leases, rental commitments on an undiscounted lease payment |  |  |  | $ 19,900,000
ASC 842 [Member] |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Operating lease ROU asset |  |  | 10,100,000 |
Operating lease liability |  |  | $ 10,300,000 |
Operating lease expense |  | $ 200,000 |  |
Minimum [Member] |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Operating and finance lease, remaining lease term | 1 year |  |  |
Maximum [Member] |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Operating and finance lease, remaining lease term | 26 years |  |  |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Indicates line item in statement of financial position that includes finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918631-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Indicates line item in statement of financial position that includes finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918631-209977 + 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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- Definition Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Weighted average remaining lease term for operating 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/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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