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Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis by Level in the Fair Value Hierarchy (Details) - Measured on a Recurring Basis $ in Thousands | Oct. 31, 2019 USD ($)
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Assets at fair value: |
Equity securities | $ 17,346
Level 1 |
Assets at fair value: |
Equity securities | 17,346
Level 2 |
Assets at fair value: |
Equity securities | 0
Level 3 |
Assets at fair value: |
Equity securities | $ 0

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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