Organization and Investment Objective	3 Months Ended
Organization and Investment Objective	Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Investment Objective	Organization and Investment Objective Ellington Credit Company ("EARN") (formerly Ellington Residential Mortgage REIT) was initially formed as a Maryland real estate investment trust ("REIT") on August 2, 2012, and commenced operations on September 25, 2012, with a focus on acquiring, investing in, and managing residential mortgage- and real estate-related assets through its wholly owned subsidiaries. EARN conducts its business through its wholly owned subsidiaries, EARN OP GP LLC (the "General Partner"), and Ellington Residential Mortgage LP (the "Operating Partnership"), which were formed as a Delaware limited liability company and a Delaware limited partnership, respectively, on July 31, 2012 and commenced operations on September 25, 2012. The Operating Partnership conducts its business of acquiring, investing in, and managing targeted assets through its wholly owned subsidiaries. EARN, the General Partner, the Operating Partnership, and their consolidated subsidiaries are hereafter defined as the "Company." On March 29, 2024, the Company's Board of Trustees approved a strategic transformation (the "CLO Strategic Transformation"), of the Company's investment strategy to focus on corporate collateralized loan obligations ("CLOs"). In connection with the CLO Strategic Transformation, the Company revoked its status as a REIT under the Internal Revenue Code of 1986, as amended ("the Code") and, effective January 1, 2024, conducts its operations as a taxable C-Corporation and maintains its exclusion from registration under the Investment Company Act of 1940, as amended (the "1940 Act"). On April 19, 2024, the Company changed its name and amended its declaration of trust and bylaws accordingly. After obtaining shareholder approval of certain matters related to the CLO Strategic Transformation at a special meeting of shareholders held on January 17, 2025 (the "Special Meeting"), the Company intends to convert to a Delaware closed-end fund registered under the 1940 Act that will elect to be treated as a regulated investment company ("RIC"), on April 1, 2025 (the "Conversion"); see Note 13 for additional details. After the Conversion, the Company will be required to comply with the rules and regulations of the 1940 Act. Subsequent to the commencement of the CLO Strategic Transformation, the Company, subject to maintaining its exclusion from registration under the 1940 Act prior to the Conversion, is focused on acquiring and actively managing a portfolio of corporate CLOs, primarily mezzanine debt and equity tranches, which are typically collateralized by portfolios consisting primarily of below-investment-grade senior secured loans with a large number of discrete underlying borrowers across various industry sectors. Additionally, the Company may also invest in CLO loan accumulation facilities, which are entities that acquire corporate loans and other similar corporate credit-related assets in anticipation of ultimately collateralizing a CLO transaction. In order to maintain its exclusion from registration under the 1940 Act, the Company also maintained a core portfolio of Agency RMBS prior to the Conversion. Prior to the CLO Strategic Transformation, the Company focused on acquiring and managing RMBS, for which the principal and interest payments are guaranteed by a U.S. government agency or a U.S. government-sponsored entity, or "Agency RMBS," and RMBS that do not carry such guarantees, or "non-Agency RMBS," such as RMBS backed by prime jumbo, Alternative A-paper, manufactured housing, and subprime residential mortgage loans. Agency RMBS include both Agency pools and Agency collateralized mortgage obligations, or "CMOs," and non-Agency RMBS primarily consist of non-Agency CMOs, both investment grade and non-investment grade. As a result of the CLO Strategic Transformation, the Company has gradually liquidated a significant portion of its portfolio of mortgage-related assets and has continued to purchase additional CLOs. Ellington Credit Company Management LLC, formerly Ellington Residential Mortgage Management LLC, or the "Manager," serves as the Manager of the Company pursuant to the terms of a management agreement, as described in Note 9. The Manager is an affiliate of Ellington Management Group, L.L.C., or "EMG," an investment management firm that is an SEC-registered investment adviser with a longstanding history of investing in CLOs across a wide variety of market conditions. In accordance with the terms of the Previous Management Agreement, the New Management Agreement, and the Services Agreement (each as defined and described in Note 9), the Manager is responsible for administering the Company's business activities and day-to-day operations, and performs certain services, subject to oversight by the Board of Trustees.