Income Taxes	3 Months Ended
Income Taxes	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income Tax Provision The Company's income tax provision for quarterly interim periods is based on an estimated annual effective income tax rate calculated separately from the effect of significant, infrequent, or unusual items. The total income tax provision, including discontinued operations, was a tax expense of $4.1 million for the three months ended December 31, 2020, compared to an income tax benefit of $0.2 million for the three months ended December 31, 2019. Income tax expense for the three months ended December 31, 2020 was substantially driven by (1) income from continuing operations, and (2) the discrete impact related to stock-based compensation expense as a result of current period activity. Income tax benefit for the three months ended December 31, 2019 was primarily driven by (1) the completion of work necessary to claim an additional $0.7 million in tax credits related to prior fiscal years, and (2) the discrete impact related to stock-based compensation expense as a result of current period activity, partially offset by (3) income from continuing operations. Deferred Tax Assets and Liabilities The Company continues to evaluate its deferred tax assets each period to determine if a valuation allowance is required based on whether it is more likely than not that some portion of these deferred tax assets will not be realized. As of December 31, 2020, management concluded that it is more likely than not that a substantial portion of our deferred tax assets will be realized. As part of our analysis, we considered both positive and negative factors that impact profitability and whether those factors would lead to a change in the estimate of our deferred tax assets that may be realized in the future. As we continue to monitor the impacts of the COVID-19 pandemic on our business, any sustained or prolonged reductions in future earnings periods may change our conclusions on whether we are more likely than not to realize portions of our deferred tax assets. At this time, our conclusions on the valuation allowance and Internal Revenue Code Section 382 limitations related to our deferred tax assets remain consistent with the determinations we made during the period ended September 30, 2020, and such conclusions are based on similar company specific and industry factors to those discussed in Note 13 to the audited consolidated financial statements within our 2020 Annual Report.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.