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v3.24.0.1

Investments - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) security | Dec. 31, 2022 USD ($) security | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of investment securities in unrealized loss position | security | 2,256 | 2,578 |  |
Impairment loss | $ 177 | $ 12,728 | $ 0 |
Other invested assets | 277,226 | 257,941 |  |
Income from other invested assets | (11,118) | 28,676 | $ 56,386 |
Fair value of investments deposited with insurance regulatory authorities to meet statutory requirements | 9,200 | 9,100 |  |
Limited Partnership Investment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Other assets, fair value | 137,800 |  |  |
Investment company, committed capital | 47,700 |  |  |
Essent Re |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Fair value of the required investments on deposit in trusts | 1,060,000 | 972,400 |  |
Essent Guaranty |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Assets on deposit under reinsurance agreement | 5,100 | 8,600 |  |
Assets on deposit for the benefit of the sponsor | $ 9,200 | $ 9,100 |  |
Minimum | Limited Partnership Investment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Investment company, asset liquidation period | 2 years |  |  |
Maximum | Limited Partnership Investment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Investment company, asset liquidation period | 9 years |  |  |
Revision adjustment | Limited Partnership Investment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Income from other invested assets |  |  |  | $ 7,600
Securities | Credit Concentration Risk | Internal Investment Grade |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Concentration risk, percentage | 98.00% |  |  |

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