Income Taxes	9 Months Ended
Jul. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes for the three months ended July 31, 2018 was a benefit of $7,014 on income before income taxes of $4,038 for a consolidated effective tax rate of (173.7)%. Income taxes included a $2,300 net benefit related to a return to provision due to a change in estimate and a $5,500 benefit based on adjusting the estimated annual tax rate used to calculate the quarterly provision related to 2018. The U.S. Internal Revenue Service has proposed disallowances of the majority of fiscal year 2012 and fiscal year 2013 U.S. R&D credits claimed. We are disputing this tax credit matter and intend to vigorously defend our position. We believe the ultimate resolution of the matters will not materially impact our results of operations, financial position or cash flows. With any tax controversy and litigation, there is, however, a chance of unforeseen loss which due to the number of years involved could materially impact our results, financial position and cash flows. For open tax years through fiscal year 2017, the total amounts related to the unreserved portion of the tax contingency, inclusive of any related interest, amounts to approximately $4,700, of which the majority has been assessed by management as being remote as to the likelihood of ultimately resulting in a loss to the Company. We routinely assess tax matters as to the probability of incurring a loss and record our best estimate of the ultimate loss in situations where we assess the likelihood of an ultimate loss as probable. The amount of unrecognized income tax benefits was increased year to date by $2,015. The provision for income taxes for the nine months ended July 31, 2018 was a benefit of $9,854 on income before income taxes of $10,081 for a consolidated effective tax rate of (97.7)%. The consolidated effective tax rate for the year decreased primarily due to a $2,300 net tax benefit related to a return to provision due to a change in estimate, a $5,500 tax benefit based on adjusting the estimated annual tax rate and a tax benefit of $3,966 due to the enactment of the TCJA. The provision for income taxes for the three months ended July 31, 2017 was an expense of $4,439 on income before income taxes of $2,457 for a consolidated effective tax rate of 180.7%. The consolidated effective tax rate was impacted by foreign losses without a tax benefit. The provision for income taxes for the nine months ended July 31, 2017 was an expense of $6,686 on income before income taxes of $6,915 for a consolidated effective tax rate of 96.7%. The consolidated effective tax rate was impacted by foreign losses without a tax benefit.

Income Taxes

The provision for income taxes for the three months ended July 31, 2018 was a benefit of $7,014 on income before income taxes of $4,038 for a consolidated effective tax rate of (173.7)%. Income taxes included a $2,300 net benefit related to a return to provision due to a change in estimate and a $5,500 benefit based on adjusting the estimated annual tax rate used to calculate the quarterly provision related to 2018.

The U.S. Internal Revenue Service has proposed disallowances of the majority of fiscal year 2012 and fiscal year 2013 U.S. R&D credits claimed. We are disputing this tax credit matter and intend to vigorously defend our position. We believe the ultimate resolution of the matters will not materially impact our results of operations, financial position or cash flows. With any tax controversy and litigation, there is, however, a chance of unforeseen loss which due to the number of years involved could materially impact our results, financial position and cash flows. For open tax years through fiscal year 2017, the total amounts related to the unreserved portion of the tax contingency, inclusive of any related interest, amounts to approximately $4,700, of which the majority has been assessed by management as being remote as to the likelihood of ultimately resulting in a loss to the Company. We routinely assess tax matters as to the probability of incurring a loss and record our best estimate of the ultimate loss in situations where we assess the likelihood of an ultimate loss as probable. The amount of unrecognized income tax benefits was increased year to date by $2,015.

The provision for income taxes for the nine months ended July 31, 2018 was a benefit of $9,854 on income before income taxes of $10,081 for a consolidated effective tax rate of (97.7)%. The consolidated effective tax rate for the year decreased primarily due to a $2,300 net tax benefit related to a return to provision due to a change in estimate, a $5,500 tax benefit based on adjusting the estimated annual tax rate and a tax benefit of $3,966 due to the enactment of the TCJA.

The provision for income taxes for the three months ended July 31, 2017 was an expense of $4,439 on income before income taxes of $2,457 for a consolidated effective tax rate of 180.7%. The consolidated effective tax rate was impacted by foreign losses without a tax benefit.

The provision for income taxes for the nine months ended July 31, 2017 was an expense of $6,686 on income before income taxes of $6,915 for a consolidated effective tax rate of 96.7%. The consolidated effective tax rate was impacted by foreign losses without a tax benefit.