Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2023	Oct. 31, 2022
Income Taxes
Deferred tax assets, Compensation and benefit accruals	$ 6,026	$ 8,523
Deferred tax assets, Bad debt and other allowances	1,945	2,453
Deferred tax assets, Capital loss and tax credit carry-forwards	14,701	14,310
Deferred tax assets, Net operating losses (domestic and foreign)	139,900	123,825
Deferred tax assets, Deferred license revenue	1,148	1,548
Deferred tax assets, Accumulated depreciation	14,051	20,229
Deferred tax assets, Grant revenue	323	475
Deferred tax assets, Excess business interest	6,406	10,424
Deferred tax assets, Operating lease liabilities	1,879	2,085
Deferred tax assets, Capitalized research and development	9,729
Deferred tax assets, Mark to market	987
Deferred tax assets, Other	4
Gross deferred tax assets:	197,099	183,872
Deferred tax assets, Valuation allowance	(193,477)	(180,048)
Deferred tax assets after valuation allowance	3,622	3,824
Deferred tax liability, In process research and development	(2,293)	(2,475)
Deferred tax liability Right of use assets	(1,600)	(1,809)
Deferred tax liability Other	(9)
Net deferred tax liability	$ (280)	$ (460)