Income Taxes	9 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	9. Income Taxes The Company recorded an income tax expense of $7.3 million and $0.4 million, respectively, during the three and nine months ended June 30, 2019. The tax expense for the three months ended June 30, 2019 was primarily driven by a $4.3 million discrete expense resulting from guidance provided with final U.S. tax regulations issued during the quarter related to the transition tax, and tax provision on current earnings based on estimated annual mix of income by jurisdiction. These expenses were partially offset by a discrete benefit for stock compensation windfalls of $0.4 million for tax deductions that exceeded the associated compensation expense, and a $0.3 million reversal of an unrecognized tax benefit upon the closing of an audit. The tax expense for the nine months ended June 30, 2019 was primarily driven by a $3.2 million expense related to the completion of the accounting for the U.S. transition tax and the tax provision on current earnings based on estimated annual mix of income by jurisdiction. These expenses were partially offset by discrete benefits related to stock compensation windfalls of $4.5 million for tax deductions that exceeded the associated compensation expense, and $1.4 million of tax benefits related to the remeasurement of net U.S. deferred tax assets due to state tax rate changes. The Company recorded an income tax provision of $5.4 million and benefit of $49.8 million, respectively, during the three and nine months ended June 30, 2018. The tax provision for the three months ended June 30, 2018 was the result of the Company’s earnings for the period. The tax benefit recorded during the nine months ended June 30, 2018 was primarily driven by a discrete benefit due to the reversal of a valuation allowance against U.S. net deferred tax assets in the amount of $56.3 million. The tax benefit for the nine months ended June 30, 2018 also included $0.7 million of tax benefits related to the re-measurement of net U.S. deferred tax liabilities to account for the reduced 21 percent statutory federal income tax rate. These discrete tax benefits for the nine months ended June 30, 2018 were partially offset by the tax provision related to foreign income. During 2018, the Internal Revenue Service issued proposed regulations on the federal toll charge and various other aspects of the Tax Cuts and Jobs Act. The Company finalized its analysis of the toll charge and related liabilities, including uncertain tax positions, during the three months ended December 31, 2018 pursuant to U.S. Securities and Exchange Commission (“SEC”) Staff Accounting Bulletin No. 118. As a result of the new guidance issued and additional work to complete the calculation of its federal toll charge, the Company reduced its provisional accrual for federal, state and foreign taxes by net $1.1 million during the three months ended December 31, 2018. During the three months ended June 30, 2019, final U.S. tax regulations were issued that resulted in a $4.3 million increase to the previously calculated transition tax. In addition, the Company also assessed its uncertain tax positions related to these taxes and accrued income and determined no tax reserves were required. The Company evaluates the realizability of its deferred tax assets by tax-paying component and assesses the need for a valuation allowance on a quarterly basis. The Company evaluates the profitability of each tax-paying component on a historic cumulative basis and a forward-looking basis while performing this analysis. The Company evaluated all positive and negative evidence in concluding it was appropriate to release the majority of the valuation allowance against U.S. net deferred tax assets during fiscal year 2018. The Company maintains a U.S. valuation allowance related to the realizability of other state tax credits and net operating loss carry-forwards. The Company continues to maintain valuation allowances against net deferred tax assets in certain foreign tax-paying components as of June 30, 2019. On July 1, 2019, the Company completed the sale of its semiconductor cryogenics business that resulted in a taxable gain in the U.S. During the fourth quarter of fiscal 2019, the Company may record adjustments to its valuation allowance as it considers new evidence including updated forecasts of U.S. income and utilization of deferred tax assets that were previously expected to expire. The Company maintains liabilities for uncertain tax positions. These liabilities involve judgment and estimation and are monitored based on the best information available. The Company recognizes interest related to unrecognized benefits as a component of the income tax benefit. The Company recognized interest expense related to its unrecognized tax benefits of $0.3 million and $0.8 million, respectively, during the three and nine months ended June 30, 2019. During the three months ended June 30, 2019 an income tax audit was closed which resulted in a $0.3 million reduction in the gross unrecognized tax benefits that impacted the effective tax rate. During the nine months ended June 30, 2018 the statute of limitations lapsed on an uncertain tax position in a foreign jurisdiction which resulted in a $0.3 million reduction in the gross unrecognized tax benefits that impacted the effective tax rate. The Company is subject to U.S. federal income tax and state, local and international income taxes in various jurisdictions. The amount of income taxes paid is subject to the Company’s interpretation of applicable tax laws in the jurisdictions in which it files tax returns. In the normal course of business, the Company is subject to income tax audits in various global jurisdictions in which it operates. The years subject to examination vary for the U.S. and international jurisdictions, with the earliest tax year being 2011. Based on the outcome of these examinations or the expiration of statutes of limitations for specific jurisdictions, it is reasonably possible that the related unrecognized tax benefits could change from those recorded in the Company’s unaudited Consolidated Balance Sheets. The Company currently anticipates that it is reasonably possible that the unrecognized tax benefits will be reduced by approximately $0.1 million within the next twelve months.

Income Taxes

9 Months Ended

Jun. 30, 2019

9. Income Taxes

The Company recorded an income tax expense of $7.3 million and $0.4 million, respectively, during the three and nine months ended June 30, 2019. The tax expense for the three months ended June 30, 2019 was primarily driven by a $4.3 million discrete expense resulting from guidance provided with final U.S. tax regulations issued during the quarter related to the transition tax, and tax provision on current earnings based on estimated annual mix of income by jurisdiction. These expenses were partially offset by a discrete benefit for stock compensation windfalls of $0.4 million for tax deductions that exceeded the associated compensation expense, and a $0.3 million reversal of an unrecognized tax benefit upon the closing of an audit. The tax expense for the nine months ended June 30, 2019 was primarily driven by a $3.2 million expense related to the completion of the accounting for the U.S. transition tax and the tax provision on current earnings based on estimated annual mix of income by jurisdiction. These expenses were partially offset by discrete benefits related to stock compensation windfalls of $4.5 million for tax deductions that exceeded the associated compensation expense, and $1.4 million of tax benefits related to the remeasurement of net U.S. deferred tax assets due to state tax rate changes.

The Company recorded an income tax provision of $5.4 million and benefit of $49.8 million, respectively, during the three and nine months ended June 30, 2018. The tax provision for the three months ended June 30, 2018 was the result of the Company’s earnings for the period. The tax benefit recorded during the nine months ended June 30, 2018 was primarily driven by a discrete benefit due to the reversal of a valuation allowance against U.S. net deferred tax assets in the amount of $56.3 million. The tax benefit for the nine months ended June 30, 2018 also included $0.7 million of tax benefits related to the re-measurement of net U.S. deferred tax liabilities to account for the reduced 21 percent statutory federal income tax rate. These discrete tax benefits for the nine months ended June 30, 2018 were partially offset by the tax provision related to foreign income.

During 2018, the Internal Revenue Service issued proposed regulations on the federal toll charge and various other aspects of the Tax Cuts and Jobs Act. The Company finalized its analysis of the toll charge and related liabilities, including uncertain tax positions, during the three months ended December 31, 2018 pursuant to U.S. Securities and Exchange Commission (“SEC”) Staff Accounting Bulletin No. 118. As a result of the new guidance issued and additional work to complete the calculation of its federal toll charge, the Company reduced its provisional accrual for federal, state and foreign taxes by net $1.1 million during the three months ended December 31, 2018. During the three months ended June 30, 2019, final U.S. tax regulations were issued that resulted in a $4.3 million increase to the previously calculated transition tax. In addition, the Company also assessed its uncertain tax positions related to these taxes and accrued income and determined no tax reserves were required.

The Company evaluates the realizability of its deferred tax assets by tax-paying component and assesses the need for a valuation allowance on a quarterly basis. The Company evaluates the profitability of each tax-paying component on a historic cumulative basis and a forward-looking basis while performing this analysis. The Company evaluated all positive and negative evidence in concluding it was appropriate to release the majority of the valuation allowance against U.S. net deferred tax assets during fiscal year 2018. The Company maintains a U.S. valuation allowance related to the realizability of other state tax credits and net operating loss carry-forwards. The Company continues to maintain valuation allowances against net deferred tax assets in certain foreign tax-paying components as of June 30, 2019. On July 1, 2019, the Company completed the sale of its semiconductor cryogenics business that resulted in a taxable gain in the U.S. During the fourth quarter of fiscal 2019, the Company may record adjustments to its valuation allowance as it considers new evidence including updated forecasts of U.S. income and utilization of deferred tax assets that were previously expected to expire.

The Company maintains liabilities for uncertain tax positions. These liabilities involve judgment and estimation and are monitored based on the best information available. The Company recognizes interest related to unrecognized benefits as a component of the income tax benefit. The Company recognized interest expense related to its unrecognized tax benefits of $0.3 million and $0.8 million, respectively, during the three and nine months ended June 30, 2019. During the three months ended June 30, 2019 an income tax audit was closed which resulted in a $0.3 million reduction in the gross unrecognized tax benefits that impacted the effective tax rate. During the nine months ended June 30, 2018 the statute of limitations lapsed on an uncertain tax position in a foreign jurisdiction which resulted in a $0.3 million reduction in the gross unrecognized tax benefits that impacted the effective tax rate.

The Company is subject to U.S. federal income tax and state, local and international income taxes in various jurisdictions. The amount of income taxes paid is subject to the Company’s interpretation of applicable tax laws in the jurisdictions in which it files tax returns. In the normal course of business, the Company is subject to income tax audits in various global jurisdictions in which it operates. The years subject to examination vary for the U.S. and international jurisdictions, with the earliest tax year being 2011. Based on the outcome of these examinations or the expiration of statutes of limitations for specific jurisdictions, it is reasonably possible that the related unrecognized tax benefits could change from those recorded in the Company’s unaudited Consolidated Balance Sheets. The Company currently anticipates that it is reasonably possible that the unrecognized tax benefits will be reduced by approximately $0.1 million within the next twelve months.