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Statutory Accounting - Narrative (Details) - Affiliated Entity - USD ($) $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Essent Guaranty |  |  |  |
Dividends Restrictions |  |  |  |
Increased in contingency reserve |  | $ 102,400 |  |
Released contingency reserve |  | 107,700 | $ 69,900 |
Statutory net income |  | 361,056 | 377,737 |
Essent Re |  |  |  |
Dividends Restrictions |  |  |  |
Statutory capital and surplus |  | 1,700,000 |  | $ 1,800,000
Statutory net income |  | $ 235,400 | $ 248,800 |
Reinsurance for mortgage insurance coverage in excess of 25% | Essent PA |  |  |  |
Dividends Restrictions |  |  |  |
Reinsurance for mortgage insurance coverage threshold (in excess of) | 25.00% |  |  |

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