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Income Taxes (Tables) | 12 Months Ended
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Oct. 31, 2023
Income Taxes |
Schedule of Components of Loss Before Income Taxes | The components of loss before income taxes for the years ended October 31, 2023, 2022, and 2021 were as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022 |  | 2021
U.S. | ​ | $ | (95,910) | ​ | $ | (145,439) | ​ | $ | (96,959)
Foreign |  | ​ | (11,565) |  | ​ | (974) |  | ​ | (4,064)
Loss before income taxes | ​ | $ | (107,475) | ​ | $ | (146,413) | ​ | $ | (101,023)
Schedule of Reconciliation of Federal Statutory Income Tax Rate To Effective Income Tax Rate | The reconciliation of the federal statutory income tax rate to our effective income tax rate for the years ended October 31, 2023, 2022 and 2021 was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022 |  | 2021 |
Statutory federal income tax rate |  | (21.0) | % | (21.0) | % | (21.0) | %
Increase (decrease) in income taxes resulting from: |  | ​ | ​ | ​ | ​ | ​ |
State taxes, net of Federal benefits |  | (3.2) | % | (3.6) | % | (5.2) | %
Foreign withholding tax |  | 0.5 | % | 0.6 | % | 0.2 | %
Net operating loss expiration, impairment and true-ups |  | 6.1 | % | 8.7 | % | 3.6 | %
Nondeductible expenditures |  | 2.1 | % | 1.4 | % | 1.9 | %
Change in tax rates |  | 2.8 | % | 0.3 | % | (1.3) | %
Fair value adjustment on warrants |  | — | % | — | % | 3.3 | %
Other, net |  | 0.6 | % | 0.7 | % | — | %
Deferred only adjustment |  | (0.1) | % | (0.1) | % | 0.8 | %
Valuation allowance |  | 12.7 | % | 13.6 | % | 17.9 | %
Effective income tax rate |  | 0.5 | % | 0.6 | % | 0.2 | %
Schedule of Deferred Tax Assets and Liabilities | Our deferred tax assets and liabilities consisted of the following as of October 31, 2023 and 2022 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022
Deferred tax assets: |  | ​ |  |  | ​ |
Compensation and benefit accruals | ​ | $ | 6,026 | ​ | $ | 8,523
Bad debt and other allowances | ​ |  | 1,945 | ​ |  | 2,453
Capital loss and tax credit carry-forwards | ​ |  | 14,701 | ​ |  | 14,310
Net operating losses (domestic and foreign) | ​ |  | 139,900 | ​ |  | 123,825
Deferred license revenue | ​ |  | 1,148 | ​ |  | 1,548
Accumulated depreciation | ​ |  | 14,051 | ​ |  | 20,229
Grant revenue | ​ |  | 323 | ​ |  | 475
Excess business interest | ​ |  | 6,406 | ​ |  | 10,424
Operating lease liabilities | ​ |  | 1,879 | ​ |  | 2,085
Capitalized research and development | ​ | ​ | 9,729 | ​ | ​ | —
Mark-to-market | ​ | ​ | 987 | ​ | ​ | —
Other | ​ |  | 4 | ​ |  | —
Gross deferred tax assets: | ​ |  | 197,099 | ​ |  | 183,872
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)
Right of use assets | ​ |  | (1,600) | ​ |  | (1,809)
Other | ​ |  | (9) | ​ |  | —
Net deferred tax liability | ​ | $ | (280) | ​ | $ | (460)

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