Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Jun. 30, 2022
Accounting Policies [Abstract]
New Significant Accounting Policy for Goodwill and Intangible Assets	New Significant Accounting Policy for Goodwill and Intangible Assets We test goodwill and indefinite-lived intangible assets for impairment annually as of August 1, or more frequently if events and circumstances warrant. Under ASC 350, Intangibles - Goodwill and Other, to evaluate the impairment of goodwill, we first assess qualitative factors, such as deterioration in the operating performance of the acquired business, adverse market conditions, adverse changes in the applicable laws or regulations and a variety of other circumstances, to determine whether it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount. To evaluate the impairment of the indefinite-lived intangible assets, we assess the fair value of the assets to determine whether they were greater or less than the carrying values. If we conclude that it is more likely than not that the fair value is less than the carrying amount based on our qualitative assessment, or that a qualitative assessment should not be performed, we proceed with the quantitative impairment tests to compare the estimated fair value of the reporting unit to the carrying value of its net assets. Determining the fair value of indefinite-lived intangible assets is judgmental in nature and involves the use of significant estimates and assumptions. We believe the most critical assumptions and estimates in determining the estimated fair value of our reporting units include, but are not limited to, future tuition revenues, operating costs, working capital changes, capital expenditures and a discount rate. The assumptions used in determining our expected future cash flows consider various factors such as historical operating trends particularly in student enrollment and pricing and long-term operating strategies and initiatives. There were no indicators of impairment for our goodwill or indefinite-lived intangible assets as of June 30, 2022. We also have definite-lived intangible assets, which primarily consist of purchased intangibles and capitalized curriculum development costs. The definite-lived intangible assets are recognized at cost less accumulated amortization. Amortization is computed using the straight-line method based on estimated useful lives of the related assets.
Recently Accounting Pronouncements	Effective in Fiscal 2022 In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“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 have evaluated the new guidance and determined that there is no material impact on our results of operations, financial condition or financial statement disclosures. In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers (“ASU 2021-08”). The amendments in ASU 2021-08 require that an entity recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Accounting Standards Codification (“ASC”) 606, Revenue from Contracts from Customers (“ASC 606”). At the acquisition date, an acquirer should account for the related revenue contracts in accordance with ASC 606 as if it had originated the contracts. To achieve this, an acquirer may assess how the acquiree applied ASC 606 to determine what to record for the acquired revenue contracts. Generally, this should result in an acquirer recognizing and measuring the acquired contract assets and contract liabilities consistent with how they were recognized and measured in the acquiree’s financial statements (if the acquiree financial statements were prepared in accordance with generally accepted accounting principles). For public business entities, the amendments in ASU 2021-08 are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption of ASU 2021-08 is permitted, including adoption in an interim period. An entity that early adopts in an interim period should apply the amendments (1) retrospectively to all business combinations for which the acquisition date occurs on or after the beginning of the fiscal year that includes the interim period of early application and (2) prospectively to all business combinations that occur on or after the date of initial application. Due to the MIAT acquisition on November 1, 2021, we have elected to early adopt ASU 2021-08 as of October 1, 2021 and have applied the guidance in ASU 2021-08 to the deferred revenue recorded for MIAT. See Note 4 for further information on the acquisition of MIAT. Other In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”), which provides optional expedients and exceptions for applying GAAP to contract modifications, hedging relationships and other transactions affected by reference rate reform, if certain criteria are met. This new guidance only applies to contracts and other transactions that reference London Interbank Offered Rate (“LIBOR”) or another reference rate expected to be discontinued due to reference rate reform. An entity may elect to apply the amendments for contract modifications as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. The amendments in ASU 2020-04 do not apply to contract modifications made after December 31, 2022. Given the interest rate for our term loan (which is further described in Note 13) references LIBOR, we are currently evaluating the new reference rate reform practical expedients and will consider adopting this guidance when we are required to modify our contract for the discontinuation of LIBOR.
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. Tuition and fee revenue is recognized ratably over the term of the course or program offered. The majority of our UTI programs are designed to be completed in 36 to 90 weeks while our MIAT programs are completed in 30 to 104 weeks. 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 19 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 Measurements	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.