Income Taxes	3 Months Ended
Jan. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 15. Income Taxes The Company recorded an income tax benefit totaling $3.0 million for the three months ended January 31, 2018. There was no income tax expense recorded for the three months ended January 31, 2019. The income tax benefit for the three months ended January 31, 2018 primarily related to the Tax Cuts and Jobs Act (the “Act”) that was enacted on December 22, 2017. The Act reduced the U.S. federal corporate tax rate from 34% to 21% effective January 1, 2018 which resulted in a deferred tax benefit of $1.0 million primarily related to a reduction of the Company’s deferred tax liability for in process research and development (“IPR&D”). The Act also established an unlimited carryforward period for the net operating loss (“NOL”) the Company generated in fiscal year 2018. This provision of the Act resulted in a reduction of the valuation allowance attributable to deferred tax assets at the enactment date by $2.0 million based on the indefinite life of the resulting NOL as well as the deferred tax liability for IPR&D.

Income Taxes

3 Months Ended

Jan. 31, 2019

Note 15. Income Taxes

The Company recorded an income tax benefit totaling $3.0 million for the three months ended January 31, 2018. There was no income tax expense recorded for the three months ended January 31, 2019. The income tax benefit for the three months ended January 31, 2018 primarily related to the Tax Cuts and Jobs Act (the “Act”) that was enacted on December 22, 2017. The Act reduced the U.S. federal corporate tax rate from 34% to 21% effective January 1, 2018 which resulted in a deferred tax benefit of $1.0 million primarily related to a reduction of the Company’s deferred tax liability for in process research and development (“IPR&D”). The Act also established an unlimited carryforward period for the net operating loss (“NOL”) the Company generated in fiscal year 2018. This provision of the Act resulted in a reduction of the valuation allowance attributable to deferred tax assets at the enactment date by $2.0 million based on the indefinite life of the resulting NOL as well as the deferred tax liability for IPR&D.