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Residential Mortgage Loans - Additional Information (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) Investment State | Dec. 31, 2024 USD ($) | Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Mortgage loans held for sale-at fair value | $ 279,097 | $ 519,885 |
Variable Interest Entity, Primary Beneficiary |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Net consolidated assets (liabilities) | 25,000 |  |
Residential Mortgage Loans Held for Sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Mortgage loans held for sale-at fair value | $ 279,000 | $ 520,000 |
Number of investments | Investment | 453 |  |
Residential mortgage loans held for sale-unpaid principal balance | $ 274,000 |  |
Number of states | State | 40 |  |
Unpaid principal balance of loans | 56.00% |  | 94.00%
Commitments to purchase and fund mortgage loans | $ 366,000 |  |
Residential Mortgage Loans Held for Sale | California |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Percentage of loans on properties | 18.00% |  |
Residential Mortgage Loans Held for Sale | Other State |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Percentage of loans on properties | 10.00% |  |
Residential Mortgage Loans Held for Sale | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Number of investments | Investment | 0 |  |
Radian Mortgage Capital | Residential Mortgage Loans Held for Sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Percentage of net worth for debt covenants | 6.00% |  |
Net worth for debt covenants | $ 89,000 |  |
Minimum net worth for debt covenants | 20,000 |  |
Radian Mortgage Capital Trust 2025-J1 |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Private offering of mortgage loans | $ 368,000 |  |

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