Income Taxes (Tables)

12 Months Ended

Oct. 31, 2021

Income Taxes

Schedule of Components of Loss Before Income Taxes

The components of loss before income taxes for the years ended October 31, 2021, 2020, and 2019 were as follows (in thousands):

	2021		2020		2019
U.S.	$	(96,959)	$	(85,865)	$	(74,133)
Foreign		(4,064)		(3,196)		(3,326)
Loss before income taxes	$	(101,023)	$	(89,061)	$	(77,459)

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, 2021, 2020 and 2019 was as follows:

	2021		2020		2019
Statutory federal income tax rate	(21.0)	%	(21.0)	%	(21.0)	%
Increase (decrease) in income taxes resulting from:
State taxes, net of Federal benefits	(5.2)	%	(1.1)	%	(2.9)	%
Foreign withholding tax	0.2	%	—	%	0.1	%
Net operating loss expiration, impairment and true-ups	3.6	%	129.2	%	(1.3)	%
Nondeductible expenditures	1.9	%	1.4	%	0.2	%
Change in tax rates	(1.3)	%	(0.6)	%	(0.1)	%
Fair value adjustment on warrants	3.3	%	8.7	%	—
Other, net	—	%	1.1	%	(0.3)	%
Deferred only adjustment	0.8	%	4.4	%	—
Valuation allowance	17.9	%	(122.1)	%	25.4	%
Effective income tax rate	0.2		—	%	0.1	%

Schedule of Deferred Tax Assets and Liabilities

Our deferred tax assets and liabilities consisted of the following as of October 31, 2021 and 2020 (in thousands):

	2021		2020
Deferred tax assets:
Compensation and benefit accruals	$	7,891	$	8,157
Bad debt and other allowances		1,081		1,574
Capital loss and tax credit carry-forwards		15,191		15,456
Net operating losses (domestic and foreign)		113,733		100,791
Deferred license revenue		1,885		2,093
Accumulated depreciation		12,379		9,759
Grant revenue		609		700
Excess business interest		9,695		5,544
Operating lease liabilities		2,211		2,387
Gross deferred tax assets:		164,675		146,461
Valuation allowance		(160,530)		(142,217)
Deferred tax assets after valuation allowance		4,145		4,244
Deferred tax liability:
In process research and development		(2,510)		(2,391)
Right of use assets		(1,964)		(2,229)
Net deferred tax liability	$	(329)	$	(376)