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Description of Business - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
	Jun. 15, 2026	Apr. 30, 2026	Jan. 31, 2026	Apr. 30, 2025	Jan. 31, 2025	Apr. 30, 2026	Apr. 30, 2025	Oct. 31, 2025
Description of Business [Line Items]
Net Income (Loss)		$ (30,227)	$ (29,752)	$ (25,815)	$ (24,616)	$ (59,979)	$ (50,431)
Cash flows from operating activities						59,401	$ 48,643
Accumulated deficit		432,011				432,011		$ 372,032
Employee Severance | Subsequent Event
Description of Business [Line Items]
Percentage of workforce reduction estimated	50.00%
United States
Description of Business [Line Items]
Long-lived assets		5,700				5,700		7,200
Canada
Description of Business [Line Items]
Long-lived assets		$ 3,700				$ 3,700		$ 3,000

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