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Financial Assets and Liabilities - Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands | Jul. 31, 2024 | Oct. 31, 2023
--- | --- | ---
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | $ 153,754 | $ 152,725
Gross Unrealized Gains | 753 | 34
Gross Unrealized Losses Less Than 12 Continuous Months | (15) | (609)
Gross Unrealized Losses 12 Continuous Months or Longer | (61) | (511)
Estimated fair value | 154,431 | 151,639
Cash equivalents |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | 51,982 | 13,123
Gross Unrealized Gains | 1 | 0
Gross Unrealized Losses Less Than 12 Continuous Months | 0 | 0
Gross Unrealized Losses 12 Continuous Months or Longer | 0 | 0
Estimated fair value | 51,983 | 13,123
Cash equivalents | Money market funds |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | 44,537 | 10,129
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses Less Than 12 Continuous Months | 0 | 0
Gross Unrealized Losses 12 Continuous Months or Longer | 0 | 0
Estimated fair value | 44,537 | 10,129
Cash equivalents | U.S. Treasury, agency & T-bills |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | 7,445 | 2,994
Gross Unrealized Gains | 1 | 0
Gross Unrealized Losses Less Than 12 Continuous Months | 0 | 0
Gross Unrealized Losses 12 Continuous Months or Longer | 0 | 0
Estimated fair value | 7,446 | 2,994
Short-term Investments | U.S. Treasury, agency & T-bills |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | 18,250 | 15,752
Gross Unrealized Gains | 61 | 0
Gross Unrealized Losses Less Than 12 Continuous Months | 0 | (61)
Gross Unrealized Losses 12 Continuous Months or Longer | (9) | (2)
Estimated fair value | 18,302 | 15,689
Short-term Investments | Municipal bonds |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total |  | 515
Gross Unrealized Gains |  | 0
Gross Unrealized Losses Less Than 12 Continuous Months |  | 0
Gross Unrealized Losses 12 Continuous Months or Longer |  | (16)
Estimated fair value |  | 499
Short-term Investments | Corporate debt securities |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | 104,267 | 103,213
Gross Unrealized Gains | 528 | 13
Gross Unrealized Losses Less Than 12 Continuous Months | (13) | (455)
Gross Unrealized Losses 12 Continuous Months or Longer | (24) | (396)
Estimated fair value | 104,758 | 102,375
Short-term Investments | Asset-backed securities |  |
Cash Equivalents and Short-term Investments [Line Items] |  |
Total | 31,237 | 33,245
Gross Unrealized Gains | 164 | 21
Gross Unrealized Losses Less Than 12 Continuous Months | (2) | (93)
Gross Unrealized Losses 12 Continuous Months or Longer | (28) | (97)
Estimated fair value | $ 31,371 | $ 33,076

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