Financial Assets and Liabilities - Summary of Cash, Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands	Oct. 31, 2023	Oct. 31, 2022
Cash, Cash Equivalents and Investments [Line Items]
Total	$ 152,725	$ 150,511
Gross Unrealized Gains	34	7
Gross Unrealized Losses Less Than 12 Continuous Months	(609)	(1,082)
Gross Unrealized Losses 12 Continuous Months or Longer	(511)	(1,523)
Estimated fair value	151,639	147,913
Cash equivalents:
Cash, Cash Equivalents and Investments [Line Items]
Total	13,123	77,683
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	13,123	77,683
Cash equivalents: | Money market funds
Cash, Cash Equivalents and Investments [Line Items]
Total	10,129	77,683
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	10,129	77,683
Cash equivalents: | U.S. Treasury, agency & T-bills
Cash, Cash Equivalents and Investments [Line Items]
Total	2,994
Gross Unrealized Gains	0
Gross Unrealized Losses Less Than 12 Continuous Months	0
Gross Unrealized Losses 12 Continuous Months or Longer	0
Estimated fair value	2,994
Short-term Investments | U.S. Treasury, agency & T-bills
Cash, Cash Equivalents and Investments [Line Items]
Total	15,752	25,816
Gross Unrealized Gains	0	0
Gross Unrealized Losses Less Than 12 Continuous Months	(61)	(174)
Gross Unrealized Losses 12 Continuous Months or Longer	(2)	(39)
Estimated fair value	15,689	25,603
Short-term Investments | Municipal bonds
Cash, Cash Equivalents and Investments [Line Items]
Total	515	2,970
Gross Unrealized Gains	0	0
Gross Unrealized Losses Less Than 12 Continuous Months	0	(12)
Gross Unrealized Losses 12 Continuous Months or Longer	(16)	(80)
Estimated fair value	499	2,878
Short-term Investments | Corporate debt securities
Cash, Cash Equivalents and Investments [Line Items]
Total	103,213	95,899
Gross Unrealized Gains	13	7
Gross Unrealized Losses Less Than 12 Continuous Months	(455)	(747)
Gross Unrealized Losses 12 Continuous Months or Longer	(396)	(1,135)
Estimated fair value	102,375	94,024
Short-term Investments | Asset-backed securities
Cash, Cash Equivalents and Investments [Line Items]
Total	33,245	25,826
Gross Unrealized Gains	21	0
Gross Unrealized Losses Less Than 12 Continuous Months	(93)	(149)
Gross Unrealized Losses 12 Continuous Months or Longer	(97)	(269)
Estimated fair value	$ 33,076	$ 25,408