Income Taxes (Tables)

12 Months Ended

Oct. 31, 2018

Schedule of Components of Loss Before Income Taxes

The components of loss before income taxes for the years ended October 31, 2018, 2017, and 2016 were as follows (in thousands):

	2018			2017			2016
U.S.	$	(47,314	)	$	(49,723	)	$	(46,708	)
Foreign		(3,035	)		(4,136	)		(3,981	)
Loss before income taxes	$	(50,349	)	$	(53,859	)	$	(50,689	)

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, 2018, 2017 and 2016 was as follows:

	2018			2017			2016
Statutory federal income tax rate		(23.2	)%		(34.0	)%		(34.0	)%
Increase (decrease) in income taxes resulting from:
State taxes, net of Federal benefits		0.7	%		(1.3	)%		(0.2	)%
Foreign withholding tax		0.0	%		0.1	%		1.1	%
Net operating loss expiration and true-ups		4.6	%		(4.6	)%		3.3	%
Nondeductible expenditures		1.5	%		1.9	%		0.9	%
Change in tax rates		201.6	%		(0.8	)%		(0.3	)%
Other, net		0.0	%		0.6	%		0.2	%
Valuation allowance		(191.2	)%		38.2	%		30.1	%
Effective income tax rate		(6.0	)%		0.1	%		1.1	%

Schedule of Deferred Tax Assets and Liabilities

Our deferred tax assets and liabilities consisted of the following at October 31, 2018 and 2017 (in thousands):

	2018			2017
Deferred tax assets:
Compensation and benefit accruals	$	7,767		$	11,158
Bad debt and other allowances		426			605
Capital loss and tax credit carry-forwards		12,295			13,398
Net operating losses (domestic and foreign)		202,643			282,022
Deferred license revenue		4,765			7,850
Inventory valuation allowances		238			111
Accumulated depreciation		4,374			5,095
Grant revenue		910			1,522
Gross deferred tax assets:		233,418			321,761
Valuation allowance		(231,403	)		(321,761	)
Deferred tax assets after valuation allowance		2,015			—
Deferred tax liability:
In process research and development		(2,356	)		(3,377	)
Net deferred tax liability	$	(341	)	$	(3,377	)