Organization and Basis of Presentation and Recently Issued Accounting Pronouncement (Policies) |
6 Months Ended |
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Jun. 30, 2025 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Segment Reporting | PennyMac Mortgage Investment Trust (“PMT” or the “Company”) is a specialty finance company, which invests in residential mortgage-related assets. The Company operates in three reportable segments: credit sensitive strategies, interest rate sensitive strategies and correspondent production. All other activities are included in corporate: • The credit sensitive strategies segment represents the Company’s investments in credit risk transfer (“CRT”) arrangements referencing loans from its own correspondent production (“CRT arrangements”) and subordinate mortgage-backed securities (“MBS”). • The interest rate sensitive strategies segment represents the Company’s investments in mortgage servicing rights (“MSRs”), Agency and senior non-Agency MBS and the related interest rate hedging activities. • The correspondent production segment represents the Company’s operations aimed at serving as an intermediary between lenders and the capital markets by purchasing, pooling and reselling newly originated prime credit quality loans either directly or in the form of MBS, using the services of PNMAC Capital Management, LLC (“PCM”) and PennyMac Loan Services, LLC (“PLS”), both wholly-owned subsidiaries of PennyMac Financial Services, Inc. (“PFSI”), a publicly-traded mortgage banking and investment management company separately listed on the New York Stock Exchange. The Company primarily sells the loans it acquires through its correspondent production activities to government-sponsored enterprises ("GSEs") such as the Federal National Mortgage Association (“Fannie Mae”) and the Federal Home Loan Mortgage Corporation (“Freddie Mac”) or to PLS primarily for sale into securitizations guaranteed by the Government National Mortgage Association ("Ginnie Mae"), or the GSEs. Fannie Mae, Freddie Mac and Ginnie Mae are each referred to as an “Agency” and, collectively, as the “Agencies.” The Company may also securitize loans directly and retain senior and subordinate MBS created in the securitizations. • Corporate activities include management fees, corporate expense amounts and certain interest income and expense. None of the corporate activities qualify as reportable segments. The Company conducts substantially all of its operations and makes substantially all of its investments through its subsidiary, PennyMac Operating Partnership, L.P. (the “Operating Partnership”), and the Operating Partnership’s subsidiaries. A wholly-owned subsidiary of the Company is the sole general partner, and the Company is the sole limited partner, of the Operating Partnership. The Company believes that it qualifies, and has elected to be taxed, as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended. To maintain its tax status as a REIT, the Company is required to distribute at least 90% of its taxable income in the form of qualifying distributions to shareholders. |
| Basis of Presentation | The Company’s consolidated financial statements have been prepared in compliance with accounting principles generally accepted in the United States (“GAAP”) as codified in the Financial Accounting Standards Board’s ("FASB") Accounting Standards Codification for interim financial information and with the Securities and Exchange Commission’s instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, these financial statements and notes do not include all of the information required by GAAP for complete financial statements. This interim consolidated information should be read together with the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024. These unaudited consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods presented, but are not necessarily indicative of the results of operations that may be expected for the full year. Intercompany accounts and transactions have been eliminated. Preparation of financial statements in compliance with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the reporting period. Actual results will likely differ from those estimates. The Company held no restricted cash during the periods presented. Therefore, the consolidated statements of cash flows do not include references to restricted cash. |
| Recently Issued Accounting Pronouncement | Recently Issued Accounting Pronouncement During 2023 the FASB issued Accounting Standards Update 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”), that is intended to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 does not require any changes to the Company’s accounting for income taxes. ASU 2023-09 requires disclosures of: • Reconciliation of the expected income tax at the applicable statutory federal income tax rate to the reported income tax in a tabular format, using both percentages and amounts, broken out into specific categories with certain reconciling items of five percent or greater of the expected tax further broken out by nature and/or jurisdiction; and • Income taxes paid, net of refunds received, broken out between federal and state and local income taxes. Payments to individual jurisdictions representing five percent or more of the total income tax payments must also be separately disclosed. The disclosures required by ASU 2023-09 are required in the Company’s annual financial statements beginning with the year ended December 31, 2025, with early adoption permitted. |
| Fair Value | The Company groups its assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability of the inputs used to determine fair value. These levels are: • Level 1—Quoted prices in active markets for identical assets or liabilities. • Level 2—Prices determined or determinable using other significant observable inputs. Observable inputs are inputs that other market participants would use in pricing an asset or liability and are developed based on market data obtained from sources independent of the Company. • Level 3—Prices determined using significant unobservable inputs. In situations where significant observable inputs are unavailable, unobservable inputs may be used. Unobservable inputs reflect the Company’s own judgments about the factors that market participants use in pricing an asset or liability, and are based on the best information available in the circumstances. As a result of the difficulty in observing certain significant valuation inputs affecting “Level 3” fair value assets and liabilities, the Company is required to make judgments regarding these items’ fair values. Different persons in possession of the same facts may reasonably arrive at different conclusions as to the inputs to be applied in valuing these assets and liabilities and their fair values. Such differences may result in significantly different fair value measurements. Likewise, due to the general illiquidity of some of these assets and liabilities, subsequent transactions may be at values significantly different from those reported. The Company reclassifies its assets and liabilities between levels of the fair value hierarchy when the significant inputs required to establish fair value at a level of the fair value hierarchy are no longer readily available, requiring the use of lower-level inputs, or when the significant inputs required to establish fair value at a higher level of the hierarchy become available. Fair Value Accounting Elections The Company identified all of PMT’s non-cash financial assets and MSRs to be accounted for at fair value. The Company has elected to account for these assets at fair value so such changes in fair value will be reflected in results of operations as they occur and more timely reflect the results of the Company’s performance. The Company has also identified its Asset-backed financings at fair value and Interest-only security payable at fair value to be accounted for at fair value to reflect the generally offsetting changes in fair value of these borrowings to changes in fair value of the assets at fair value collateralizing these financings. For other borrowings, the Company has determined that historical cost accounting is more appropriate because under this method debt issuance costs are amortized over the term of the debt facility, thereby matching the debt issuance cost to the periods benefiting from the availability of the debt. |