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Statutory Accounting - Schedule of Statutory Net Income, Statutory Surplus and Contingency Reserve Liability (Details) - Affiliated Entity - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Essent Guaranty
Dividends Restrictions
Statutory net income	$ 590,505	$ 497,652	$ 312,091
Statutory surplus	1,020,034	1,043,866	1,048,878
Contingency reserve liability	2,048,740	1,792,671	1,499,782
Essent PA
Dividends Restrictions
Statutory net income	859	3,176	4,560
Statutory surplus	52,609	56,136	54,354
Contingency reserve liability	$ 56,744	$ 57,384	$ 56,032

X

- Definition

Represents the amount of contingency reserve liability, as of the balance sheet date, using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

No definition available.

+ Details

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X

- Definition

Represents the amount of statutory surplus (stockholders' equity), as of the balance sheet date, using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

No definition available.

+ Details

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- 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

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- Definition

Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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