Recent Accounting Pronouncements (Policies)	3 Months Ended
Recent Accounting Pronouncements (Policies)	Dec. 31, 2020
Accounting Policies [Abstract]
Recently Accounting Pronouncements	Effective the First Quarter of Fiscal 2021 In June 2016, the Financial Accounting Standards Board (“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 measure credit losses. The new standard requires that entities estimate credit losses based upon an “expected credit loss” approach rather than the historical “incurred loss” approach. The new approach requires 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 impacts 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 our 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. Effective the First Quarter of Fiscal 2022 In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in this standard 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.
Nature of Goods and Services/Contract Balances	Nature of Goods and Services Postsecondary Education Revenues consist primarily of student tuition and fees derived from the programs we provide after reductions are made for discounts and scholarships that we sponsor and for refunds for students who withdraw from our programs prior to specified dates. We apply the five-step model outlined in ASC 606, Revenue from Contracts from Customers. Tuition and fee revenue is recognized ratably over the term of the course or program offered. The majority of our programs are designed to be completed in 36 to 90 weeks, and our advanced training programs range from 12 to 23 weeks in duration. We supplement our revenues with sales of textbooks and program supplies and other revenues, which are recognized as the transfer of goods or services occurs. Deferred revenue represents the excess of tuition and fee payments received as compared to tuition and fees earned and is reflected as a current liability in our condensed consolidated balance sheets because it is expected to be earned within the next 12 months. Additionally, certain students participate in a proprietary loan program that extends repayment terms for their tuition. We purchase said loans from the lender and, based on historical collection rates, believe a portion of these loans are collectible. Accordingly, we recognize tuition and loan origination fees financed by the loan and any related interest revenue under the effective interest method required under the loan based on the amount we expect to collect, and we recognize these revenues ratably over the term of the course or program offered. Other We provide dealer technician training or instructor staffing services to manufacturers. Revenues are recognized as transfer of the services occurs. We provide postsecondary education and other services in the same geographical market, the United States. The impact of economic factors on the nature, amount, timing and uncertainty of revenue and cash flows is consistent among our various postsecondary education programs. See Note 16 for disaggregated segment revenue information. Contract Balances Contract assets primarily relate to our rights to consideration for a student’s progress through our training program in relation to our services performed but not billed at the reporting date. The contract assets are transferred to the receivables when the rights become unconditional. Currently, we do not have any contract assets that have not transferred to a receivable. Our deferred revenue is considered a contract liability and primarily relates to our enrollment agreements where we received payments for tuition but we have not yet delivered the related training programs to satisfying the related performance obligations. The advance consideration received from students or Title IV funding is deferred revenue until the training program has been delivered to the students.
Fair Value Measurement	Fair Value Measurements The accounting framework for determining fair value includes a hierarchy for ranking the quality and reliability of the information used to measure fair value, which enables the reader of the financial statements to assess the inputs used to develop those measurements. The fair value hierarchy consists of three tiers: Level 1: Defined as quoted market prices in active markets for identical assets or liabilities. Level 2: Defined as inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, model-based valuation techniques for which all significant assumptions are observable in the market or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3: Defined as unobservable inputs that are not corroborated by market data. Any transfers of investments between levels occurs at the end of the reporting period.