Organization and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. Our management has included all adjustments it considers necessary for a fair presentation and which are of a normal, recurring nature. All intercompany accounts and transactions have been eliminated in consolidation. Certain prior year amounts have been reclassified to conform to current year presentation. The accompanying financial statements should be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended September 30, 2019. The balance sheet as of September 30, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. Our business is subject to seasonal variations, and operating results for the three and nine months ended June 30, 2020 and 2019 (the "current quarter" and "current nine-months" and "prior-year quarter" and "prior-year nine-months," respectively) are not necessarily indicative of the results of operations for the full fiscal year. There have been no changes in significant accounting policies as described in our Annual Report on Form 10-K for the year ended September 30, 2019, other than those described below and in Note 12.
Use of Estimates and Assumptions	Use of Estimates and Assumptions The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. The Company regularly evaluates estimates and judgments, including those related to revenue recognition, inventories, loan loss allowances, long-lived and intangible assets, share-based compensation, income taxes, contingencies and litigation. The Company bases its estimates on historical experience, observable trends and various other assumptions that it believes to be reasonable under the circumstances. We use this information to make judgments about the carrying values of assets and liabilities and the accrual of costs and expenses that are not readily apparent from other sources. Actual results may differ materially and adversely from the Company's estimates under different assumptions or conditions.
Recently Adopted Accounting Policies and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Policies In March 2020, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2020-04, Reference Rate Reform (Topic 848) — Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate. ASU 2020-04 is effective upon issuance through December 31, 2022. This ASU has not had a significant impact on the Company's consolidated financial statements and related disclosures to date. The Company will continue to assess the applicability to any future arrangements. Effective October 1, 2019, the Company adopted ASU 2016-02, Leases (Topic 842), which requires companies to recognize operating and financing lease liabilities and corresponding right-of-use assets on the balance sheet using the optional prospective transition method provided under ASU 2018-11, Leases- (Topic 842): Targeted Improvements. Additionally, the Company elected the package of practical expedients under Accounting Standards Codification ("ASC") 842 as well as the transition guidance elections to not separate lease and non-lease components for leases under ASC 842. Further, the Company has elected an accounting policy to not record right-of-use assets and lease liabilities for leases that have a duration of 12-months or less. See Note 5 for additional discussion. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses (Topic 326) (ASU 2016-13"). ASU 2016-13 modifies the measurement of expected credit losses of certain financial instruments, requiring entities to estimate an expected lifetime credit loss on financial assets. The ASU amends the impairment model to utilize an expected loss methodology and replaces the incurred loss methodology for financial instruments including trade receivables. The amendment requires entities to consider other factors, such as economic conditions and future economic conditions. A reporting entity should generally apply the amendment on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the amendment is effective. The Company is still assessing the amendments in ASU 2016-13 and does not expect the amendments will have a significant impact on the Company's consolidated financial statements and related disclosures. ASU 2016-13 is effective for the first quarter of fiscal 2021.