XML 51 R42.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Reinsurance - Premium Details (Details) - Reinsurance Contract [Axis]: Vintage Year 2017 | Sep. 30, 2022
--- | ---
Radnor Re 2018-1 Ltd. |
Effects of Reinsurance [Line Items] |
Increase of margin component of reinsurance premium | 50.00%
Panel of Reinsurers |
Effects of Reinsurance [Line Items] |
Increase of margin component of reinsurance premium | 50.00%

X
- Definition Risk Margin Increase After Optional Termination Date + References No definition available. + Details
Name: | esnt_RiskMarginIncreaseAfterOptionalTerminationDate
Namespace Prefix: | esnt_
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_EffectsOfReinsuranceLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_CounterpartyNameAxis=esnt_RadnorRe20181Ltd.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Vintage Year 2017
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=esnt_PanelOfReinsurersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |