Recent Accounting Pronouncements	12 Months Ended
Recent Accounting Pronouncements	Sep. 30, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Pronouncements Effective in Fiscal 2020 Leases In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”), which amended the FASB Accounting Standards Codification (“ASC”) by creating ASC 842 to replace ASC 840. ASU 2016-02 requires lessees to recognize a right-of-use (“ROU”) asset and a lease liability on the balance sheet for substantially all leases, with the exception of short-term leases. Leases are classified as either finance or operating, with classification affecting the pattern of expense recognition in the statement of income. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842) to provide entities with relief from the costs of implementing certain aspects of the new leasing standard. It also allows lessors to elect not to separate lease and non-lease components when certain conditions are met. In March 2019, the FASB issued ASU 2019-01, Lease (Topic 842): Codification Improvements (“ASU 2019-01”). ASU 2019-01 clarifies certain items regarding lessor accounting. It also clarifies the interim disclosure requirements during transition. The new guidance in ASC 842 also provides a package of transition practical expedients that allow an entity to not reassess (1) whether any expired or existing contracts contain a lease, (2) the lease classification of any expired or existing lease, and (3) initial direct costs for any existing lease. We adopted ASC 842 effective October 1, 2019, and elected the package of transition practical expedients. We also elected additional transitional practical expedients that allow an entity to not reassess land easements not previously addressed under ASC 840 and to not recognize on the balance sheet leases with terms of less than 12 months. We are using the modified retrospective method without the recasting of comparative periods’ financial information. We did not elect the practical expedient to use hindsight in determining a lease term of the ROU assets at the adoption date. As a result of adopting the new standard, we recognized an operating lease liability of $163.0 million and an operating lease ROU asset of $148.6 million on October 1, 2019. The change resulted in the de-recognition of approximately $0.9 million of other assets and $15.3 million of other liabilities. The standard did not materially impact our condensed consolidated statements of operations and cash flows. In addition, we have two build-to-suit leases that were accounted for as financing obligations and related assets because we had continued involvement in the related facility after the construction period was completed. The financing obligations are now classified as operating leases in accordance with the new standard as of the transition date, including recognition of operating lease ROU assets and lease liabilities. The change resulted in the de-recognition of approximately $40.7 million existing deferred financing obligations and $31.6 million in related assets. The net impact of the de-recognition and the adoption of ASC 842 as of October 1, 2019 was an increase in stockholders’ equity of approximately $9.1 million, with a subsequent adjustment during the three months ended March 31, 2020, which reduced the impact to stockholders’ equity by $0.1 million. The transition also resulted in the recognition of rent expense, which was previously reported as interest expense under the former guidance. See Note 10 “Leases” for our fiscal 2020 disclosures. Fair Value Measurement In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820) (“ASU 2018-13”). ASU 2018-13 amends the disclosure requirements of ASC 820, changing the fair value measurement disclosure requirements of ASC 820 by adding new disclosure requirements, modifying existing disclosure requirements and eliminating other disclosure requirements. We adopted ASU 2018-13 as of October 1, 2019. There was no impact to our consolidated financial statements or disclosures. Cloud Computing Arrangements In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and other Internal-use Software (Subtopic 350-40) (“ASU 2018-15”). ASU 2018-15 aligns the accounting for costs incurred to implement a cloud computing arrangement (“CCA”) that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. Specifically, ASU 2018-15 amends ASC 350 to include in its scope implementation costs of a CCA that is a service contract and clarifies that a customer should apply ASC 350-40 to determine which implementation costs should be capitalized in a CCA that is considered a service contract. The effect of this new standard on our consolidated financial statements is dependent on our entry into any future cloud computing arrangements. Accounting Pronouncements Effective in Fiscal 2021 In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments (Topic 326). This update significantly changes the way that entities will be required to measure credit losses. This standard requires that entities estimate credit losses based upon an “expected credit loss” approach rather than the “incurred loss” approach, which is currently used. The new approach will require entities to measure all expected credit losses for financial assets based on historical experience, current conditions and reasonable forecasts of collectability. The change in approach is anticipated to impact the timing of recognition of credit losses. This standard is effective for financial statements issued by public companies for annual and interim periods beginning after December 15, 2019. These changes became effective for the Company's fiscal year beginning October 1, 2020. Upon adoption on October 1, 2020, we recorded an increase in our receivables balance related to our proprietary loan program of $1.6 million, with the corresponding amount recorded as an increase to retained earnings. No other adjustments were deemed necessary in applying this new guidance, and we do not expect the adoption of ASU 2016-13 to have a material impact on our results of operations. Accounting Pronouncements Effective in Fiscal 2022 In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). The amendments in ASU 2019-12 simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. We are currently evaluating the impact that the update will have on our results of operations, financial condition and financial statement disclosures.