XML 44 R34.htm IDEA: XBRL DOCUMENT
v3.23.1

Investments - Summary of Municipal Debt Securities and Corporate Debt Securities (Details) | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Municipal debt securities |  |
Investments available for sale |  |
Percentage of debt securities | 100.00% | 100.00%
Municipal debt securities | Special revenue bonds |  |
Investments available for sale |  |
Percentage of debt securities | 81.40% | 79.00%
Municipal debt securities | General obligation bonds |  |
Investments available for sale |  |
Percentage of debt securities | 18.50% | 20.90%
Municipal debt securities | Certificate of participation bonds |  |
Investments available for sale |  |
Percentage of debt securities | 0.00% | 0.00%
Municipal debt securities | Tax allocation bonds |  |
Investments available for sale |  |
Percentage of debt securities | 0.10% | 0.10%
Corporate debt securities |  |
Investments available for sale |  |
Percentage of debt securities | 100.00% | 100.00%
Corporate debt securities | Financial |  |
Investments available for sale |  |
Percentage of debt securities | 40.80% | 40.50%
Corporate debt securities | Consumer, non-cyclical |  |
Investments available for sale |  |
Percentage of debt securities | 18.50% | 17.90%
Corporate debt securities | Consumer, cyclical |  |
Investments available for sale |  |
Percentage of debt securities | 7.20% | 6.80%
Corporate debt securities | Industrial |  |
Investments available for sale |  |
Percentage of debt securities | 6.70% | 6.80%
Corporate debt securities | Utilities |  |
Investments available for sale |  |
Percentage of debt securities | 5.70% | 6.10%
Corporate debt securities | Communications |  |
Investments available for sale |  |
Percentage of debt securities | 8.60% | 8.40%
Corporate debt securities | Technology |  |
Investments available for sale |  |
Percentage of debt securities | 4.80% | 4.90%
Corporate debt securities | Energy |  |
Investments available for sale |  |
Percentage of debt securities | 5.50% | 6.40%
Corporate debt securities | Basic Materials |  |
Investments available for sale |  |
Percentage of debt securities | 2.10% | 2.10%
Corporate debt securities | Government |  |
Investments available for sale |  |
Percentage of debt securities | 0.10% | 0.10%

X
- Definition Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column D)) -URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 + Details
Name: | us-gaap_InvestmentOwnedPercentOfNetAssets
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_SpecialRevenueMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_GeneralObligationMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_CertificationOfParticipationBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_TaxAllocationMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_FinancialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_ConsumerNoncyclicalSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_ConsumerCyclicalSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_IndustrialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_UtilitiesSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_CommunicationsSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_TechnologyDebtSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_EnergySectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_BasicMaterialsSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=esnt_GovernmentDebtSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |