Basis of Presentation and Significant Accounting Policies [Text Block] | ( 1 Basis of Financial Statement Presentation The accompanying unaudited condensed balance sheet as of September 30, 2023 three December 31, 2023 10 December 31, 2023 three December 31, 2023 2022 three December 31, 2023 2022 2023, 10‑K September 30, 2023. The preparation of financial statements requires management to make estimates and assumptions. Making estimates requires management to exercise significant judgment. Accordingly, the actual results could differ substantially from those estimates. The Company’s operating activities consist primarily of providing investment advisory services to 16 open-end mutual funds and one 30 The employee retention credit (“ERC”), as originally enacted on March 27, 2020, 50% December 31, 2021, 19 941 X May 2023, not 20" 20, The Company’s operating revenues consist of contractual investment advisory and shareholder service fees paid to it by the Hennessy Funds. The Company earns investment advisory fees from each Hennessy Fund by, among other things: ● acting as portfolio manager for the fund or overseeing the sub‑advisor acting as portfolio manager for the fund, which includes managing the composition of the fund’s portfolio (including the purchase, retention, and disposition of portfolio securities in accordance with the fund’s investment objectives, policies, and restrictions), seeking best execution for the fund’s portfolio, managing the use of soft dollars for the fund, and managing proxy voting for the fund; ● performing a daily reconciliation of portfolio positions and cash for the fund; ● monitoring the liquidity of the fund; ● monitoring the fund’s compliance with its investment objectives and restrictions and federal securities laws; ● maintaining a compliance program (including a code of ethics), conducting ongoing reviews of the compliance programs of the fund’s service providers (including any sub‑advisor), including their codes of ethics, as appropriate, conducting onsite visits to the fund’s service providers (including any sub-advisor) as feasible, monitoring incidents of abusive trading practices, reviewing fund expense accruals, payments, and fixed expense ratios, evaluating insurance providers for fidelity bond, directors and officers and errors and omissions insurance, and cybersecurity insurance coverage, managing regulatory examination compliance and responses, conducting employee compliance training, reviewing reports provided by service providers, and maintaining books and records; ● if applicable, overseeing the selection and continued employment of the fund’s sub‑advisor, reviewing the fund’s investment performance, and monitoring the sub‑advisor’s adherence to the fund’s investment objectives, policies, and restrictions; ● overseeing service providers that provide accounting, administration, distribution, transfer agency, custodial, sales, marketing, public relations, audit, information technology, and legal services to the fund; ● maintaining in‑house marketing and distribution departments on behalf of the fund; ● preparing or directing the preparation of all regulatory filings for the fund, including writing and annually updating the fund’s prospectus and related documents; ● for each annual report of the fund, preparing or reviewing a written summary of the fund’s performance during the most recent 12‑month ● monitoring and overseeing the accessibility of the fund on financial institution platforms; ● paying the incentive compensation of the fund’s compliance officer and employing other staff such as legal, marketing, national accounts, distribution, sales, administrative, and trading oversight personnel, as well as management executives; ● providing a quarterly compliance certification to the Board of Trustees of Hennessy Funds Trust (the “Funds’ Board of Trustees”); and ● preparing or reviewing materials for the Funds’ Board of Trustees, presenting to or leading discussions with the Funds’ Board of Trustees, preparing or reviewing all meeting minutes, and arranging for training and education of the Funds’ Board of Trustees. The Company earns shareholder service fees from Investor Class shares of the Hennessy Mutual Funds by, among other things, maintaining a toll free number that the current investors in the Hennessy Funds may Investment advisory and shareholder service fee revenues are earned and calculated daily by the Hennessy Funds’ accountants at U.S. Bank Global Fund Services and are subsequently reviewed by management. The Company recognizes revenues when its obligations related to the investment advisory and shareholder services are satisfied, and it is probable that a significant reversal of the revenue amount would not 12 606 The Company’s contractual agreements for investment advisory and shareholder services prove that a contract exists with fixed and determinable fees, and the services are rendered daily. The collectability is deemed probable because the fees are received from the Hennessy Funds in the month subsequent to the month in which the services are provided. |