Income Taxes (Tables)

12 Months Ended

Oct. 31, 2019

Schedule of Components of Loss Before Income Taxes

The components of loss before income taxes for the years ended October 31, 2019, 2018, and 2017 were as follows (in thousands):

	2019			2018			2017
U.S.	$	(74,133	)	$	(47,314	)	$	(49,723	)
Foreign		(3,326	)		(3,035	)		(4,136	)
Loss before income taxes	$	(77,459	)	$	(50,349	)	$	(53,859	)

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, 2019, 2018 and 2017 was as follows:

	2019			2018			2017
Statutory federal income tax rate		(21.0	)%		(23.2	)%		(34.0	)%
Increase (decrease) in income taxes resulting from:
State taxes, net of Federal benefits		(2.9	)%		0.7	%		(1.3	)%
Foreign withholding tax		0.1	%		0.0	%		0.1	%
Net operating loss expiration and true-ups		(1.3	)%		4.6	%		(4.6	)%
Nondeductible expenditures		0.2	%		1.5	%		1.9	%
Change in tax rates		(0.1	)%		201.6	%		(0.8	)%
Other, net		(0.3	)%		0.0	%		0.6	%
Valuation allowance		25.4	%		(191.2	)%		38.2	%
Effective income tax rate		0.1	%		(6.0	)%		0.1	%

Schedule of Deferred Tax Assets and Liabilities

Our deferred tax assets and liabilities consisted of the following at October 31, 2019 and 2018 (in thousands):

	2019			2018
Deferred tax assets:
Compensation and benefit accruals	$	7,446		$	7,767
Bad debt and other allowances		905			426
Capital loss and tax credit carry-forwards		12,645			12,295
Net operating losses (domestic and foreign)		217,430			202,643
Deferred license revenue		4,264			4,765
Inventory valuation allowances		312			238
Accumulated depreciation		9,200			4,374
Grant revenue		798			910
Gross deferred tax assets:		253,000			233,418
Valuation allowance		(250,985	)		(231,403	)
Deferred tax assets after valuation allowance		2,015			2,015
Deferred tax liability:
In process research and development		(2,321	)		(2,356	)
Net deferred tax liability	$	(306	)	$	(341	)